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Infectious Disease Medical Terms
Acquired immune deficiency syndrome (AIDS)
A disease of the human immune system caused by the human immunodeficiency virus.
Actinomycosis
An infectious bacterial disease caused by Actinomyces species such as Actinomyces israelii
African sleeping sickness (African trypanosomiasis)
A parasitic disease of people and animals
Airborne
Carried by air
Amebiasis
An infection caused by the amoeba Entamoeba histolytica
Amoebic dysentery
A type of dysentery caused primarily by the amoeba Entamoeba histolytica
Anaplasmosis
A disease caused by a rickettsial parasite of ruminants, Anaplasma spp
Anthrax
Anthrax is an acute disease caused by the bacterium Bacillus anthracis
Antimicrobial agent
A general term for drugs, chemicals, or other substances that either kill or slow the growth of microbes
Arcanobacterium haemolyticum pharyngitis
Inflammation of pharynx caused by Arcanobacterium haemolyticum
Arcanobacterium haemolyticum infection
Infection caused by Arcanobacterium haemolyticum.
Argentine hemorrhagic fever
Argentine hemorrhagic fever (AHF) or O'Higgins disease, stubble disease, is a hemorrhagic fever and zoonotic infectious disease occurring in Argentina. It is caused by the Junín virus.
Ascariasis
A disease caused by the parasitic roundworm Ascaris lumbricoides
Aspergillosis
The name given to a wide variety of diseases caused by fungi of the genus Aspergillus
Astrovirus infection
Infections caused by Astrovirus
Babesiosis
A malaria-like parasitic disease caused by infection with Babesia, a genus of protozoal piroplasms
Bacillus cereus infection
Infection caused by Bacillus cereus
Bacteria
A large domain of prokaryotic microorganisms.
Bacterial vaginosis (BV)
Bacterial vaginosis (BV) or less commonly vaginal bacteriosis is a disease of the vagina caused by bacteria.
Bacteroides infection
Infection caused by bacillus bacteria
Balantidiasis
A protozoan infection caused by infection with Balantidium coli
Baylisascaris infection
Infection caused by Baylisascaris
BK virus infection
Infection caused by BK virus
Black piedra
Blastocystis hominis infection
Infection caused by Blastocystis hominis
Blastomycosis
A fungal infection caused by the organism Blastomyces dermatitidis.
Bloodborne
A blood-borne disease is one that can be spread through contamination by blood.
Bolivian hemorrhagic fever
Bolivian hemorrhagic fever (BHF), also known as black typhus or Ordog Fever, is a hemorrhagic fever and zoonotic infectious disease originating in Bolivia after infection by Machupo virus
Borrelia burgdorferi
A species of Gram negative bacteria
Borrelia infection
Infection caused by Borrelia
Botulism
Botulism also known as botulinus intoxication is a rare but serious paralytic illness caused by botulinum toxin which is metabolic waste produced under anaerobic conditions by the bacterium Clostridium botulinum, and affecting a wide range of mammals, birds and fish.
Brazilian hemorrhagic fever
Brazilian hemorrhagic fever (BzHF) is an infectious disease caused by the Sabiá virus, an Arenavirus.
Brucellosis
Brucellosis, also called Bang's disease, Crimean fever, Gibraltar fever, Malta fever, Maltese fever, Mediterranean fever, rock fever, or undulant fever, is a highly contagious zoonosis caused by ingestion of unsterilized milk or meat from infected animals or close contact with their secretions.
Burkholderia infection
Infection caused by Burkholderia.
Buruli ulcer
An infectious disease caused by Mycobacterium ulcerans
Calicivirus infection
Infection caused by Calivirus
Campylobacteriosis
An infection by the Campylobacter bacterium.
Candida
A genus of yeasts
Candidiasis (Moniliasis; Thrush)
A fungal infection caused by any candida species.
Carrier
Transmitter of disease
Cat-scratch disease
A benign infectious disease caused by the intracellular bacterium Bartonella.
Cellulitis
Inflammation of tissues beneath the skin.
Chagas Disease (American trypanosomiasis)
A tropical parasitic disease caused by the flagellate protozoan Trypanosoma cruzi.
Chancroid
A sexually transmitted infection characterized by painful sores on the genitalia
Chickenpox
A highly infectious viral disease, especially affecting children, characterized by a rash of small itching blisters on the skin and mild fever.
Chlamydia
A sexually transmitted disease caused by the bacterium Chlamydia trachomatis.
Cholera
Cholera is an infection of the small intestine that is caused by the bacterium Vibrio cholerae.
Chromoblastomycosis
A long-term fungal infection of the skin and subcutaneous tissue
Clonorchiasis
Clonorchiasis is an infectious disease caused by the Chinese liver fluke, Clonorchis sinensis.
Clostridium difficile infection
Infection caused by Clostridium difficile
Coccidioidomycosis
A fungal disease caused by Coccidioides immitis
Colorado tick fever (CTF)
An obtuse viral infection transmitted from the bite of an infected tick.
Common cold (Acute viral rhinopharyngitis; Acute coryza)
A viral infectious disease of the upper respiratory system which affects primarily the nose.
Communicable disease
Infectious disease
Congenital
Existing at birth
Contagious
Transmitted from one person to another either by direct contact with the person or by indirect contact
Creutzfeldt-Jakob disease (CJD)
CJD is a degenerative neurological disorder (brain disease) that is incurable and invariably fatal. It is also called human form of mad cow disease.
Crimean-Congo hemorrhagic fever (CCHF)
A widespread tick-borne viral disease
Cryptococcosis
A potentially fatal fungal disease
Cryptosporidiosis
A parasitic disease caused by Cryptosporidium, a protozoan parasite in the phylum Apicomplexa
Cutaneous larva migrans (CLM)
CLM is a skin disease in humans, caused by the larvae of various nematode parasites of the hookworm family
Cyclosporiasis
Cyclosporiasis is an infection with the protozoan Cyclospora cayetanensis, a pathogen transmitted by feces or feces-contaminated fresh produce and water.
Cysticercosis
The disease is spread via the fecal-oral route through contaminated food and water, and is primarily a food borne disease.
Cytomegalovirus infection
Infection spread through Cytomegalovirus
Cytomegalovirus retinitis
A viral inflammation of the retina of the eye.
Dengue fever
Dengue fever also known as breakbone fever, is an infectious tropical disease caused by the dengue virus
Dientamoebiasis
A medical condition caused by infection with Dientamoeba fragilis
Diphtheria
a serious infectious disease, caused by a bacterium, Corynebacterium diphtheriae, that attacks the membranes of the throat and releases a toxin that damages the heart and the nervous system.
Diphyllobothriasis
The infection caused by the tapeworm Diphyllobothrium
Dracunculiasis
Also called guinea worm disease (GWD), is a parasitic infection caused by Dracunculus medinensis, a long and very thin nematode (roundworm).
Droplet spread
Transmission of an infection through the projection of oral and nasal secretions by coughing, sneezing, or talking.
Ebola hemorrhagic fever
Ebola virus disease (EVD) (or more commonly, Ebola hemorrhagic fever (EHF)) is the name for the human disease which may be caused by any of the five known ebolaviruses
Echinococcosis
Echinococcosis, which is often referred to as hydatid disease or echinococcal disease, is a parasitic disease.
Ehrlichiosis
Ehrlichiosis is a tickborne bacterial infection.
Endocarditis
Inflammation of the thin membranous lining endocardium of the heart's cavities.
Enterobiasis (Pinworm infection)
A pinworm infection or enterobiasis is a human parasitic disease and one of the most common childhood parasitic worm infections in the developed world.
Enterococcus infection
Infection caused by enterococcus
Enterovirus infection
Infection caused by enterovirus
Epidemic typhus
It is a form of typhus (typhus is any of several similar diseases caused by Rickettsiae) so named because the disease often causes epidemics following wars and natural disasters.
Epidemiology
The scientific and medical study of the causes and transmission of disease within a population
Epstein-Barr virus (EBV)
Also called human herpesvirus 4 (HHV-4), is a virus of the herpes family and is one of the most common viruses in humans.
Epstein-Barr Virus Infection
Infection caused by Epstein-Barr Virus
Mononucleosis (Mono)
An infectious, widespread viral disease caused by the Epstein–Barr virus (EBV).
Erysipelas
A type of skin infection (cellulitis).
Erythema infectiosum (Fifth disease)
One of several possible manifestations of infection by erythrovirus, previously called parvovirus B19.
Exanthem subitum
Exanthema subitum (meaning sudden rash), also referred to as roseola infantum (or rose rash of infants), sixth disease (as the sixth rash-causing childhood disease) and (confusingly) baby measles, or three-day fever, is a disease of children, generally under two years old
Fasciolopsiasis
A parasitic disease caused by parasite named Fasciolopsis buski.
Fasciolosis
A disease caused by parasite named Fasciola hepatica(the common liver fluke) and Fasciola gigantica
Fatal familial insomnia (FFI)
A very rare autosomal dominant inherited infectious disease of the brain.
Fecal-oral route
Filariasis
A parasitic disease and is considered an infectious tropical disease, that is caused by thread-like nematodes (roundworms) belonging to the superfamily Filarioidea.
Fomite
A fomite is any inanimate object or substance capable of carrying infectious organisms (such as germs or parasites) and hence transferring them from one individual to another.
Food poisoning by Clostridium perfringens
Food poisoning caused by Clostridium perfringens
Free-living amebic infection
Fungi
A member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds
Fusobacterium infection
A infection caused by Fusobacterium
Gas gangrene (Clostridial myonecrosis)
A bacterial infection that produces gas tissues in gangrene.
Genital warts
Soft, wart-like growths on the skin and mucus membranes of the genitals in men and women
Geotrichosis
A fungal infection caused by Geotrichum candidum
Gerstmann-Sträussler-Scheinker syndrome (GSS)
A very rare, usually familial, fatal neurodegenerative disease that affects patients from 20 to 60 years in age.
Giardiasis
Giardiasis or beaver fever in humans is a diarrheal infection of the small intestine by a single-celled organism Giardia lamblia
Glanders
An infectious disease that occurs primarily in horses, mules, and donkeys.
Gnathostomiasis
The human infection by the nematode (roundworm) Gnathostoma spinigerum and/or Gnathostoma hispidum
Gonorrhea
A common sexually transmitted infection caused by the bacterium Neisseria gonorrhoeae
Gram-negative
Gram-negative bacteria are bacteria that do not retain crystal violet dye in the Gram staining protocol.
Gram-positive
Gram-positive bacteria are those that are stained dark blue or violet by Gram staining.
Granuloma inguinale (Donovanosis)
A bacterial disease caused by K. granulomatis characterized by ulcerative genital lesions.
Group A beta-hemolytic streptococci (GABHS)
A streptococcal infection
Infection caused by Group A streptococcal bacteria
Group B streptococcal infection
Infection caused by Group B streptococcal bacteria
Haemophilus influenzae infection
Infection caused by Haemophilus influenzae
Hand, foot and mouth disease (HFMD)
A human syndrome caused by intestinal viruses of the Picornaviridae family.
Hantavirus Pulmonary Syndrome (HPS)
A life-threatening disease spread to humans by rodents that has symptoms similar to influenza.
Helicobacter pylori infection
Infection caused by Helicobacter pylori
Hemolytic-uremic syndrome (HUS)
A disease characterized by hemolytic anemia, acute renal failure (uremia) and a low platelet count (thrombocytopenia).
Hemorrhagic fever with renal syndrome (HFRS)
A life-threatening disease spread to humans by rodents that has symptoms similar to influenza.
Hepatitis A
Hepatitis A is inflammation (irritation and swelling) of the liver from the hepatitis A virus.
Hepatitis B
Hepatitis B is irritation and swelling (inflammation) of the liver due to infection with the hepatitis B virus (HBV).
Hepatitis C
Hepatitis C is inflammation (irritation and swelling) of the liver from the hepatitis C virus.
Hepatitis D
Hepatitis D is inflammation (irritation and swelling) of the liver from the hepatitis D virus.
Hepatitis E
Hepatitis E is inflammation (irritation and swelling) of the liver from the hepatitis E virus.
Herpes simplex virus
There are 2 type of Herpes simplex virus. HSV-1 and HSV-2. Both HSV-1 (which produces most cold sores) and HSV-2 (which produces most genital herpes) are exists everywhere and contagious.
Histoplasmosis
A disease caused by the fungus Histoplasma capsulatum.
HIV (Human immunodeficiency virus)
A virus that causes acquired immunodeficiency syndrome (AIDS)
Hookworm infection
Infection caused by hookworm.
Host
An organism harboring another organism on or in itself
Human bocavirus infection
An Infection caused by human bocavirus
Human ewingii ehrlichiosis
An infectious disease caused by an intracellular bacteria, Ehrlichia ewingii
Human granulocytic anaplasmosis (HGA)
An infectious disease caused by Anaplasma phagocytophilum.
Human immunodeficiency virus (HIV)
A lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (AIDS).
Human metapneumovirus infection
Infection caused by Human metapneumovirus
Human monocytic ehrlichiosis
A tickborne bacterial infection
Human papillomavirus (HPV) infection
An infection caused by human papillomavirus
Human parainfluenza virus infection
An infection caused by human parainfluenza virus
Hymenolepiasis
An infestation by one of two species of tapeworm
Impetigo
A contagious infection of the skin caused by staphylococcal and streptococcal bacteria and characterized by blisters that form yellow-brown scabs.
Infectious disease
Infectious diseases, also known as communicable diseases, contagious diseases or transmissible diseases comprise clinically evident illness (i.e., characteristic medical signs and/or symptoms of disease) resulting from the infection, presence and growth of pathogenic biological agents in an individual host organism.
Infectious mononucleosis (IM)
An infectious, widespread viral disease caused by the Epstein–Barr virus (EBV).
Influenza (flu)
An infectious disease caused by the influenza viruses.
Interferons
Interferons (IFNs) are proteins made and released by host cells in response to the presence of pathogens—such as viruses, bacteria, or parasites—or tumor cells.
Isosporiasis
A human intestinal disease caused by the parasite Isospora belli.
Kawasaki disease
Kawasaki disease (KD), also known as Kawasaki syndrome, lymph node syndrome and mucocutaneous lymph node syndrome, is an autoimmune disease in which the medium-sized blood vessels throughout the body become inflamed.
Keratitis
The inflammation and swelling of the cornea
Kingella kingae infection
An infection caused by Kingella kingae
Kuru
Kuru is an incurable degenerative neurological disorder that is a type of transmissible spongiform encephalopathy.
Lassa fever
Lassa fever is an acute viral hemorrhagic fever caused by the Lassa virus.
Legionellosis (Legionnaires disease)
Legionellosis is a potentially fatal infectious disease caused by gram negative, aerobic bacteria belonging to the genus Legionella.
Legionellosis (Pontiac fever)
A potentially fatal infectious disease caused by gram negative, aerobic bacteria belonging to the genus Legionella.
Leishmaniasis
Leishmaniasis is a disease caused by protozoan parasites that belong to the genus Leishmania.
Leprosy
Leprosy or Hansen's disease (HD) is a chronic disease caused by the bacteria Mycobacterium leprae and Mycobacterium lepromatosis.
Leptospirosis
Leptospirosis is caused by infection with bacteria of the genus Leptospira.
Listeriosis
Listeriosis is a bacterial infection caused by a Gram-positive, motile bacterium, Listeria monocytogenes
Lyme disease (Lyme borreliosis)
An infectious bacterial disease transmitted by ticks, in which skin rash, fever, and headache precede arthritis and nervous disorder.
Lymphatic filariasis (Elephantiasis)
Filariasis is a parasitic disease and is considered an infectious tropical disease, that is caused by thread-like nematodes (roundworms) belonging to the superfamily Filarioidea, also known as "filariae".
Lymphocytic choriomeningitis
Lymphocytic choriomeningitis (LCM), is a rodent-borne viral infectious disease that presents as aseptic meningitis, encephalitis or meningoencephalitis.
Malaria
Malaria is a mosquito-borne infectious disease of humans and other animals caused by eukaryotic protists of the genus Plasmodium.
Marburg hemorrhagic fever (MHF)
A diverse group of animal and human illnesses that are caused by four distinct families of RNA viruses.
Maternal Varicella
Measles
Measles, also known as rubeola or morbilli, is an infection of the respiratory system caused by a virus.
Melioidosis (Whitmore's disease)
Melioidosis is an infectious disease caused by a Gram-negative bacterium, Burkholderia pseudomallei, found in soil and water.
Meningitis
Meningitis is inflammation of the protective membranes covering the brain and spinal cord, known collectively as the meninges.
Meningococcal disease
Meningococcal disease describes infections caused by the bacterium Neisseria meningitidis (also termed meningococcus).
Metagonimiasis
Metagonimiasis is a disease caused by an intestinal trematode.
Microbial flora
Microbial flora refers to the microorganisms that live in gastrointestinal tract.
Microsporidiosis
An opportunistic intestinal infection that causes diarrhea which is caused by microsporidia parasites.
Molluscum contagiosum (MC)
A viral infection of the skin or occasionally of the mucous membranes.
Mumps
A viral disease of the human species, caused by the mumps virus.
Murine typhus (Endemic typhus)
A form of typhus transmitted by fleas.
Mycetoma
A fungal disease
Mycoplasma pneumonia
A form of bacterial pneumonia that is caused by the bacteria species Mycoplasma pneumoniae.
Myiasis
A general term for pathological infection by parasitic fly larvae feeding on the host's living tissue.
Necrotizing fasciitis (NF)
Necrotizing fasciitis (NF), commonly known as flesh-eating disease or Flesh-eating bacteria syndrome, is a rare infection of the deeper layers of skin and subcutaneous tissues, easily spreading across the fascial plane within the subcutaneous tissue.
Neonatal conjunctivitis (Ophthalmia neonatorum)
Neonatal conjunctivitis, also known as ophthalmia neonatorum, is a form of bacterial conjunctivitis contracted by newborns during delivery.
Nocardiosis
Nocardiosis is an infectious disease affecting either the lungs (pulmonary nocardiosis) or the whole body (systemic nocardiosis).
Onchocerciasis (River blindness)
A parasitic disease caused by infection by Onchocerca volvulus, a nematode (roundworm).
Paracoccidioidomycosis (South American blastomycosis)
A fungal infection caused by the fungus Paracoccidioides brasiliensis
Paragonimiasis
A food-borne parasitic infection caused by the lung fluke, most commonly Paragonimus westermani
Parasites
A plant or animal that lives on or in another, usually larger, host organism in a way that harms or is of no advantage to the host.
Pasteurellosis
An infection with a species of the bacteria genus Pasteurella.
Pathogenic microorganisms
Pathogens
A pathogen or infectious agent is a biological agent that causes disease or illness to its host.
Pediculosis capitis (Head lice)
A human medical condition caused by the colonization of the hair and skin by the parasitic insect Pediculus humanus capitis—the head louse.
Pediculosis corporis (Body lice)
A cutaneous condition caused by body lice (specifically Pediculus corporis) that lay their eggs in the seams of clothing.
Pediculosis pubis (Pubic lice, Crab lice)
A disease caused by the crab louse Phthirus pubis, a parasitic insect notorious for infesting human pubic hair.
Pelvic inflammatory disease (PID)
A generic term for inflammation of the uterus, fallopian tubes, and/or ovaries as it progresses to scar formation with adhesions to nearby tissues and organs.
Period of communicability
The period of time when the infectious agent that causes a communicable disease may be transmitted to a susceptible host.
Pertussis (Whooping cough)
A highly contagious bacterial disease caused by Bordetella pertussi.
Pinworm
Pinworm is an intestinal infection caused by tiny parasitic worms.
Plague
A deadly infectious disease that is caused by the enterobacteria Yersinia pestis. Primarily carried by rodents (most notably rats) and spread to humans via fleas.
Pneumococcal infection
Infection caused by Streptococcus pneumoniae.
Pneumococcal pneumonia
A lung infection caused by Streptococcus pneumoniae.
Pneumocystis pneumonia (PCP)
A form of pneumonia, caused by the yeast-like fungus (which had previously been erroneously classified as a protozoan) Pneumocystis jiroveci.
Pneumonia
Pneumonia is an inflammatory condition of the lung especially affecting the microscopic air sacs (alveoli)—associated with fever, chest symptoms, and a lack of air space (consolidation) on a chest X-ray. Pneumonia is typically caused by an infection but there are a number of other causes. Infectious agents include: bacteria, viruses, fungi, and parasites.
Poliomyelitis
An acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route.
Prevotella infection
Infection caused by Prevotella
Primary amoebic
A disease of the central nervous system caused by infection from Naegleria fowleri
meningoencephalitis (PAM)
Progressive multifocal leukoencephalopathy
A rare and usually fatal viral disease that is characterized by progressive damage (pathy) or inflammation of the white matter (leuko) of the brain (encephalo) at multiple locations (multifocal).
Prophylaxis
Any measure taken to prevent health problems.
Psittacosis
Psittacosis also known as parrot disease, parrot fever, and ornithosis is an infectious disease caused by a bacterium called Chlamydophila psittaci
Pubic lice
Pubic lice are small, six-legged creatures that infect the pubic hair area and lay eggs.
Pus
The yellowish or greenish fluid that forms at sites of infection, consisting of dead white blood cells, dead tissue, bacteria, and blood serum.
Q fever
A disease caused by infection with Coxiella burnetii.
Rabies
A viral disease that causes acute encephalitis (inflammation of the brain)
Rash
A general, nonspecific term that describes any visible skin outbreak.
Rat-bite fever
An acute fever caused by bacteria transmitted by rodents.
Respiratory syncytial virus infection
An infection caused by respiratory syncytial virus
Reye syndrome
A sudden (acute) brain damage (encephalopathy) and liver function problems of unknown cause.
Rhinosporidiosis
An infection caused by Rhinosporidium seeberi.
Rhinovirus infection
An Infection caused by rhinovirus
Rickettsial infection
An infection caused by bacteria of the Rickettsia
Rickettsialpox
An illness caused by bacteria of the Rickettsia
Rift Valley fever (RVF)
An infectious disease that causes fever.
Ringworm
A fungal disease of the skin, scalp, or nails in which intensely itchy ring-shaped patches develop.
Rocky mountain spotted fever (RMSF)
The most lethal and most frequently reported rickettsial illness in the United States.
Rotavirus infection
Infection caused by Rotavirus
Rubella
Rubella, commonly known as German measles, is a disease caused by the rubella virus
Salmonellosis
An infection with Salmonella bacteria.
SARS (Severe Acute Respiratory Syndrome)
A respiratory disease in humans which is caused by the SARS coronavirus
Scabies
A contagious skin infection
Scarlet fever
A contagious bacterial infection marked by fever, a sore throat, and a red rash, mainly affecting children.
Schistosomiasis
A parasitic disease caused by several species of trematodes
Sepsis
A potentially deadly medical condition that is characterized by a whole-body inflammatory state and the presence of a known or suspected infection.
Septicemia
A disease caused by toxic microorganisms in the bloodstream.
Sexually transmitted diseases
Sexually transmitted disease (STD), also known as a sexually transmitted infection (STI) or venereal disease (VD), is an illness that has a significant probability of transmission between humans by means of human sexual behavior, including vaginal intercourse, oral sex, and anal sex.
Shigellosis (Bacillary dysentery)
Dysentery caused by bacteria named shigella.
Shingles (herpes zoster)
Shingles (herpes zoster) is a painful, blistering skin rash due to the varicella-zoster virus, the virus that causes chickenpox
Smallpox (Variola)
An infectious disease caused by two virus variants, Variola major and Variola minor
Spirochete
One type of gram-negative bacteria.
Sporotrichosis
A disease caused by the infection of the fungus Sporothrix schenckii
Staphylococcal food poisoning
Food poisoning caused by staphylococcal bacteria.
Staphylococcal infection
A infection caused by staphylococcal bacteria.
Staphylococci (staph)
A type of bacteria
Streptococcal disease
Streptococcal disease is caused by a bacteria known as group A beta-hemolytic streptococcus
Streptococcal pharyngitis or strep throat
An acute sore throat caused by the bacterium Streptococcus pyogenes and accompanied by fever and inflammation.
Streptococci (strep
Strongyloidiasis
A human parasitic disease caused by the nematode (roundworm)
Syphilis
A sexually transmitted infection caused by the spirochete bacterium
Taeniasis
Taeniasis is a form of tapeworm infection which is caused by tapeworms of the genius Taenia.
Tetanus (Lockjaw)
A medical condition characterized by a prolonged contraction of skeletal muscle fibers
Thrush
A fungal infection of the mouth characterized by white patches.
Tick
A small wingless bloodsucking insect that lives on the skin of humans and warm-blooded animals and may transmit diseases. Families: Argasidae, Ixodidae.
Tinea barbae (Barber's itch)
A fungal infection of the hair.
Tinea capitis (Ringworm of the Scalp)
A superficial fungal infection (dermatophytosis) of the scalp.
Tinea corporis (Ringworm of the Body)
A superficial fungal infection (dermatophytosis) of the arms and legs, especially on glabrous skin, however it may occur on any part of the body.
Tinea cruris (Jock itch)
A dermatophyte fungal infection of the groin region in either sex, though more often seen in males.
Tinea manuum (Ringworm of the Hand)
A fungal infection of the hand.
Tinea nigra
A superficial fungal infection that causes dark brown to black painless patches on the palms of the hands and the soles of the feet.
Tinea pedis (Athlete’s foot)
A fungal infection of the skin that causes scaling, flaking, and itch of affected areas
Tinea unguium (Onychomycosis)
A fungal infection of the nail
Tinea versicolor (Pityriasis versicolor)
A condition characterized by a rash on the trunk and proximal extremities.
Toxic shock syndrome
Toxic shock syndrome (TSS) is a potentially fatal illness caused by a bacterial toxin.
Toxins
A poison produced by a living organism.
Toxocariasis (Ocular Larva Migrans (OLM)
An illness of humans caused by a larvae (immature worms) of either the dog roundworm (Toxocara canis) or the cat roundworm (Toxocara cati).
Toxocariasis (Visceral Larva Migrans (VLM)
An illness of humans caused by a larvae (immature worms) of either the dog roundworm (Toxocara canis) or the cat roundworm (Toxocara cati).
Toxoplasmosis
Toxoplasmosis is a parasitic disease caused by the protozoan Toxoplasma gondii.
Transmissible
Able to be transmitted
Trichinellosis
Also called trichinosis or trichiniasis, is a parasitic disease caused by eating raw or undercooked pork.
Trichomonas
A common cause of vaginitis caused by the single-celled protozoan parasite Trichomonas vaginalis
Trichomoniasis
Trichomoniasis, sometimes referred to as "trich", is a common cause of vaginitis.
Trichuriasis (Whipworm infection)
A parasitic infection primarily in the tissue of the cecum, appendix, colon and rectum that is caused by Trichuris trichiura (whipworm), an intestinal parasitic nematode (roundworm).
Tropical disease
Tropical diseases are diseases that are unique to tropical and subtropical regions.
Trypanosoma brucei
A parasite
Tuberculosis
A common, and in many cases lethal, infectious disease caused by various strains of mycobacteria, usually Mycobacterium tuberculosis
Tularemia
Tularemia (also known as Pahvant Valley plague rabbit fever, deer fly fever, and Ohara's fever) is a serious infectious disease caused by the bacterium Francisella tularensis
Tzanck test
Tzanck test, also Tzanck smear, is scraping of an ulcer base to look for Tzanck cells. It is sometimes also called the Chickenpox skin test and the herpes skin test.
Ureaplasma urealyticum infection
Infection caused by Ureaplasma urealyticum
Vaginitis
Inflammation of vagina
Varicella-zoster
Varicella zoster virus (VZV) is one of eight herpes viruses known to infect humans. It commonly causes chicken-pox in children and Herpes zoster (shingles) in adults and rarely in children.
Vector
Disease transmitting organism
Venezuelan equine encephalitis
Venezuelan equine encephalitis virus is a mosquito-borne viral pathogen that causes Venezuelan equine encephalitis or encephalomyelitis (VEE).
Venezuelan hemorrhagic fever
An infectious human illness.
Viral pneumonia
A pneumonia caused by a virus
Viruses
A submicroscopic parasite
West Nile Fever
A virus of the family Flaviviridae
White piedra (Tinea Blanca)
A mycosis of the hair
Yeast
Small single celled fungus
Yellow fever
An acute viral hemorrhagic disease
Yersinia pseudotuberculosis infection
Infection caused by Yersinia pseudotuberculosis
Yersiniosis
Yersiniosis is an infectious disease caused by a bacterium of the genus Yersinia
Zoster
Same as shingles
Zygomycosis
Zygomycosis is the broadest term to refer to infections caused by bread mold fungi of the Zygomycota phylum.
A disease of the human immune system caused by the human immunodeficiency virus.
Actinomycosis
An infectious bacterial disease caused by Actinomyces species such as Actinomyces israelii
African sleeping sickness (African trypanosomiasis)
A parasitic disease of people and animals
Airborne
Carried by air
Amebiasis
An infection caused by the amoeba Entamoeba histolytica
Amoebic dysentery
A type of dysentery caused primarily by the amoeba Entamoeba histolytica
Anaplasmosis
A disease caused by a rickettsial parasite of ruminants, Anaplasma spp
Anthrax
Anthrax is an acute disease caused by the bacterium Bacillus anthracis
Antimicrobial agent
A general term for drugs, chemicals, or other substances that either kill or slow the growth of microbes
Arcanobacterium haemolyticum pharyngitis
Inflammation of pharynx caused by Arcanobacterium haemolyticum
Arcanobacterium haemolyticum infection
Infection caused by Arcanobacterium haemolyticum.
Argentine hemorrhagic fever
Argentine hemorrhagic fever (AHF) or O'Higgins disease, stubble disease, is a hemorrhagic fever and zoonotic infectious disease occurring in Argentina. It is caused by the Junín virus.
Ascariasis
A disease caused by the parasitic roundworm Ascaris lumbricoides
Aspergillosis
The name given to a wide variety of diseases caused by fungi of the genus Aspergillus
Astrovirus infection
Infections caused by Astrovirus
Babesiosis
A malaria-like parasitic disease caused by infection with Babesia, a genus of protozoal piroplasms
Bacillus cereus infection
Infection caused by Bacillus cereus
Bacteria
A large domain of prokaryotic microorganisms.
Bacterial vaginosis (BV)
Bacterial vaginosis (BV) or less commonly vaginal bacteriosis is a disease of the vagina caused by bacteria.
Bacteroides infection
Infection caused by bacillus bacteria
Balantidiasis
A protozoan infection caused by infection with Balantidium coli
Baylisascaris infection
Infection caused by Baylisascaris
BK virus infection
Infection caused by BK virus
Black piedra
Blastocystis hominis infection
Infection caused by Blastocystis hominis
Blastomycosis
A fungal infection caused by the organism Blastomyces dermatitidis.
Bloodborne
A blood-borne disease is one that can be spread through contamination by blood.
Bolivian hemorrhagic fever
Bolivian hemorrhagic fever (BHF), also known as black typhus or Ordog Fever, is a hemorrhagic fever and zoonotic infectious disease originating in Bolivia after infection by Machupo virus
Borrelia burgdorferi
A species of Gram negative bacteria
Borrelia infection
Infection caused by Borrelia
Botulism
Botulism also known as botulinus intoxication is a rare but serious paralytic illness caused by botulinum toxin which is metabolic waste produced under anaerobic conditions by the bacterium Clostridium botulinum, and affecting a wide range of mammals, birds and fish.
Brazilian hemorrhagic fever
Brazilian hemorrhagic fever (BzHF) is an infectious disease caused by the Sabiá virus, an Arenavirus.
Brucellosis
Brucellosis, also called Bang's disease, Crimean fever, Gibraltar fever, Malta fever, Maltese fever, Mediterranean fever, rock fever, or undulant fever, is a highly contagious zoonosis caused by ingestion of unsterilized milk or meat from infected animals or close contact with their secretions.
Burkholderia infection
Infection caused by Burkholderia.
Buruli ulcer
An infectious disease caused by Mycobacterium ulcerans
Calicivirus infection
Infection caused by Calivirus
Campylobacteriosis
An infection by the Campylobacter bacterium.
Candida
A genus of yeasts
Candidiasis (Moniliasis; Thrush)
A fungal infection caused by any candida species.
Carrier
Transmitter of disease
Cat-scratch disease
A benign infectious disease caused by the intracellular bacterium Bartonella.
Cellulitis
Inflammation of tissues beneath the skin.
Chagas Disease (American trypanosomiasis)
A tropical parasitic disease caused by the flagellate protozoan Trypanosoma cruzi.
Chancroid
A sexually transmitted infection characterized by painful sores on the genitalia
Chickenpox
A highly infectious viral disease, especially affecting children, characterized by a rash of small itching blisters on the skin and mild fever.
Chlamydia
A sexually transmitted disease caused by the bacterium Chlamydia trachomatis.
Cholera
Cholera is an infection of the small intestine that is caused by the bacterium Vibrio cholerae.
Chromoblastomycosis
A long-term fungal infection of the skin and subcutaneous tissue
Clonorchiasis
Clonorchiasis is an infectious disease caused by the Chinese liver fluke, Clonorchis sinensis.
Clostridium difficile infection
Infection caused by Clostridium difficile
Coccidioidomycosis
A fungal disease caused by Coccidioides immitis
Colorado tick fever (CTF)
An obtuse viral infection transmitted from the bite of an infected tick.
Common cold (Acute viral rhinopharyngitis; Acute coryza)
A viral infectious disease of the upper respiratory system which affects primarily the nose.
Communicable disease
Infectious disease
Congenital
Existing at birth
Contagious
Transmitted from one person to another either by direct contact with the person or by indirect contact
Creutzfeldt-Jakob disease (CJD)
CJD is a degenerative neurological disorder (brain disease) that is incurable and invariably fatal. It is also called human form of mad cow disease.
Crimean-Congo hemorrhagic fever (CCHF)
A widespread tick-borne viral disease
Cryptococcosis
A potentially fatal fungal disease
Cryptosporidiosis
A parasitic disease caused by Cryptosporidium, a protozoan parasite in the phylum Apicomplexa
Cutaneous larva migrans (CLM)
CLM is a skin disease in humans, caused by the larvae of various nematode parasites of the hookworm family
Cyclosporiasis
Cyclosporiasis is an infection with the protozoan Cyclospora cayetanensis, a pathogen transmitted by feces or feces-contaminated fresh produce and water.
Cysticercosis
The disease is spread via the fecal-oral route through contaminated food and water, and is primarily a food borne disease.
Cytomegalovirus infection
Infection spread through Cytomegalovirus
Cytomegalovirus retinitis
A viral inflammation of the retina of the eye.
Dengue fever
Dengue fever also known as breakbone fever, is an infectious tropical disease caused by the dengue virus
Dientamoebiasis
A medical condition caused by infection with Dientamoeba fragilis
Diphtheria
a serious infectious disease, caused by a bacterium, Corynebacterium diphtheriae, that attacks the membranes of the throat and releases a toxin that damages the heart and the nervous system.
Diphyllobothriasis
The infection caused by the tapeworm Diphyllobothrium
Dracunculiasis
Also called guinea worm disease (GWD), is a parasitic infection caused by Dracunculus medinensis, a long and very thin nematode (roundworm).
Droplet spread
Transmission of an infection through the projection of oral and nasal secretions by coughing, sneezing, or talking.
Ebola hemorrhagic fever
Ebola virus disease (EVD) (or more commonly, Ebola hemorrhagic fever (EHF)) is the name for the human disease which may be caused by any of the five known ebolaviruses
Echinococcosis
Echinococcosis, which is often referred to as hydatid disease or echinococcal disease, is a parasitic disease.
Ehrlichiosis
Ehrlichiosis is a tickborne bacterial infection.
Endocarditis
Inflammation of the thin membranous lining endocardium of the heart's cavities.
Enterobiasis (Pinworm infection)
A pinworm infection or enterobiasis is a human parasitic disease and one of the most common childhood parasitic worm infections in the developed world.
Enterococcus infection
Infection caused by enterococcus
Enterovirus infection
Infection caused by enterovirus
Epidemic typhus
It is a form of typhus (typhus is any of several similar diseases caused by Rickettsiae) so named because the disease often causes epidemics following wars and natural disasters.
Epidemiology
The scientific and medical study of the causes and transmission of disease within a population
Epstein-Barr virus (EBV)
Also called human herpesvirus 4 (HHV-4), is a virus of the herpes family and is one of the most common viruses in humans.
Epstein-Barr Virus Infection
Infection caused by Epstein-Barr Virus
Mononucleosis (Mono)
An infectious, widespread viral disease caused by the Epstein–Barr virus (EBV).
Erysipelas
A type of skin infection (cellulitis).
Erythema infectiosum (Fifth disease)
One of several possible manifestations of infection by erythrovirus, previously called parvovirus B19.
Exanthem subitum
Exanthema subitum (meaning sudden rash), also referred to as roseola infantum (or rose rash of infants), sixth disease (as the sixth rash-causing childhood disease) and (confusingly) baby measles, or three-day fever, is a disease of children, generally under two years old
Fasciolopsiasis
A parasitic disease caused by parasite named Fasciolopsis buski.
Fasciolosis
A disease caused by parasite named Fasciola hepatica(the common liver fluke) and Fasciola gigantica
Fatal familial insomnia (FFI)
A very rare autosomal dominant inherited infectious disease of the brain.
Fecal-oral route
Filariasis
A parasitic disease and is considered an infectious tropical disease, that is caused by thread-like nematodes (roundworms) belonging to the superfamily Filarioidea.
Fomite
A fomite is any inanimate object or substance capable of carrying infectious organisms (such as germs or parasites) and hence transferring them from one individual to another.
Food poisoning by Clostridium perfringens
Food poisoning caused by Clostridium perfringens
Free-living amebic infection
Fungi
A member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds
Fusobacterium infection
A infection caused by Fusobacterium
Gas gangrene (Clostridial myonecrosis)
A bacterial infection that produces gas tissues in gangrene.
Genital warts
Soft, wart-like growths on the skin and mucus membranes of the genitals in men and women
Geotrichosis
A fungal infection caused by Geotrichum candidum
Gerstmann-Sträussler-Scheinker syndrome (GSS)
A very rare, usually familial, fatal neurodegenerative disease that affects patients from 20 to 60 years in age.
Giardiasis
Giardiasis or beaver fever in humans is a diarrheal infection of the small intestine by a single-celled organism Giardia lamblia
Glanders
An infectious disease that occurs primarily in horses, mules, and donkeys.
Gnathostomiasis
The human infection by the nematode (roundworm) Gnathostoma spinigerum and/or Gnathostoma hispidum
Gonorrhea
A common sexually transmitted infection caused by the bacterium Neisseria gonorrhoeae
Gram-negative
Gram-negative bacteria are bacteria that do not retain crystal violet dye in the Gram staining protocol.
Gram-positive
Gram-positive bacteria are those that are stained dark blue or violet by Gram staining.
Granuloma inguinale (Donovanosis)
A bacterial disease caused by K. granulomatis characterized by ulcerative genital lesions.
Group A beta-hemolytic streptococci (GABHS)
A streptococcal infection
Infection caused by Group A streptococcal bacteria
Group B streptococcal infection
Infection caused by Group B streptococcal bacteria
Haemophilus influenzae infection
Infection caused by Haemophilus influenzae
Hand, foot and mouth disease (HFMD)
A human syndrome caused by intestinal viruses of the Picornaviridae family.
Hantavirus Pulmonary Syndrome (HPS)
A life-threatening disease spread to humans by rodents that has symptoms similar to influenza.
Helicobacter pylori infection
Infection caused by Helicobacter pylori
Hemolytic-uremic syndrome (HUS)
A disease characterized by hemolytic anemia, acute renal failure (uremia) and a low platelet count (thrombocytopenia).
Hemorrhagic fever with renal syndrome (HFRS)
A life-threatening disease spread to humans by rodents that has symptoms similar to influenza.
Hepatitis A
Hepatitis A is inflammation (irritation and swelling) of the liver from the hepatitis A virus.
Hepatitis B
Hepatitis B is irritation and swelling (inflammation) of the liver due to infection with the hepatitis B virus (HBV).
Hepatitis C
Hepatitis C is inflammation (irritation and swelling) of the liver from the hepatitis C virus.
Hepatitis D
Hepatitis D is inflammation (irritation and swelling) of the liver from the hepatitis D virus.
Hepatitis E
Hepatitis E is inflammation (irritation and swelling) of the liver from the hepatitis E virus.
Herpes simplex virus
There are 2 type of Herpes simplex virus. HSV-1 and HSV-2. Both HSV-1 (which produces most cold sores) and HSV-2 (which produces most genital herpes) are exists everywhere and contagious.
Histoplasmosis
A disease caused by the fungus Histoplasma capsulatum.
HIV (Human immunodeficiency virus)
A virus that causes acquired immunodeficiency syndrome (AIDS)
Hookworm infection
Infection caused by hookworm.
Host
An organism harboring another organism on or in itself
Human bocavirus infection
An Infection caused by human bocavirus
Human ewingii ehrlichiosis
An infectious disease caused by an intracellular bacteria, Ehrlichia ewingii
Human granulocytic anaplasmosis (HGA)
An infectious disease caused by Anaplasma phagocytophilum.
Human immunodeficiency virus (HIV)
A lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (AIDS).
Human metapneumovirus infection
Infection caused by Human metapneumovirus
Human monocytic ehrlichiosis
A tickborne bacterial infection
Human papillomavirus (HPV) infection
An infection caused by human papillomavirus
Human parainfluenza virus infection
An infection caused by human parainfluenza virus
Hymenolepiasis
An infestation by one of two species of tapeworm
Impetigo
A contagious infection of the skin caused by staphylococcal and streptococcal bacteria and characterized by blisters that form yellow-brown scabs.
Infectious disease
Infectious diseases, also known as communicable diseases, contagious diseases or transmissible diseases comprise clinically evident illness (i.e., characteristic medical signs and/or symptoms of disease) resulting from the infection, presence and growth of pathogenic biological agents in an individual host organism.
Infectious mononucleosis (IM)
An infectious, widespread viral disease caused by the Epstein–Barr virus (EBV).
Influenza (flu)
An infectious disease caused by the influenza viruses.
Interferons
Interferons (IFNs) are proteins made and released by host cells in response to the presence of pathogens—such as viruses, bacteria, or parasites—or tumor cells.
Isosporiasis
A human intestinal disease caused by the parasite Isospora belli.
Kawasaki disease
Kawasaki disease (KD), also known as Kawasaki syndrome, lymph node syndrome and mucocutaneous lymph node syndrome, is an autoimmune disease in which the medium-sized blood vessels throughout the body become inflamed.
Keratitis
The inflammation and swelling of the cornea
Kingella kingae infection
An infection caused by Kingella kingae
Kuru
Kuru is an incurable degenerative neurological disorder that is a type of transmissible spongiform encephalopathy.
Lassa fever
Lassa fever is an acute viral hemorrhagic fever caused by the Lassa virus.
Legionellosis (Legionnaires disease)
Legionellosis is a potentially fatal infectious disease caused by gram negative, aerobic bacteria belonging to the genus Legionella.
Legionellosis (Pontiac fever)
A potentially fatal infectious disease caused by gram negative, aerobic bacteria belonging to the genus Legionella.
Leishmaniasis
Leishmaniasis is a disease caused by protozoan parasites that belong to the genus Leishmania.
Leprosy
Leprosy or Hansen's disease (HD) is a chronic disease caused by the bacteria Mycobacterium leprae and Mycobacterium lepromatosis.
Leptospirosis
Leptospirosis is caused by infection with bacteria of the genus Leptospira.
Listeriosis
Listeriosis is a bacterial infection caused by a Gram-positive, motile bacterium, Listeria monocytogenes
Lyme disease (Lyme borreliosis)
An infectious bacterial disease transmitted by ticks, in which skin rash, fever, and headache precede arthritis and nervous disorder.
Lymphatic filariasis (Elephantiasis)
Filariasis is a parasitic disease and is considered an infectious tropical disease, that is caused by thread-like nematodes (roundworms) belonging to the superfamily Filarioidea, also known as "filariae".
Lymphocytic choriomeningitis
Lymphocytic choriomeningitis (LCM), is a rodent-borne viral infectious disease that presents as aseptic meningitis, encephalitis or meningoencephalitis.
Malaria
Malaria is a mosquito-borne infectious disease of humans and other animals caused by eukaryotic protists of the genus Plasmodium.
Marburg hemorrhagic fever (MHF)
A diverse group of animal and human illnesses that are caused by four distinct families of RNA viruses.
Maternal Varicella
Measles
Measles, also known as rubeola or morbilli, is an infection of the respiratory system caused by a virus.
Melioidosis (Whitmore's disease)
Melioidosis is an infectious disease caused by a Gram-negative bacterium, Burkholderia pseudomallei, found in soil and water.
Meningitis
Meningitis is inflammation of the protective membranes covering the brain and spinal cord, known collectively as the meninges.
Meningococcal disease
Meningococcal disease describes infections caused by the bacterium Neisseria meningitidis (also termed meningococcus).
Metagonimiasis
Metagonimiasis is a disease caused by an intestinal trematode.
Microbial flora
Microbial flora refers to the microorganisms that live in gastrointestinal tract.
Microsporidiosis
An opportunistic intestinal infection that causes diarrhea which is caused by microsporidia parasites.
Molluscum contagiosum (MC)
A viral infection of the skin or occasionally of the mucous membranes.
Mumps
A viral disease of the human species, caused by the mumps virus.
Murine typhus (Endemic typhus)
A form of typhus transmitted by fleas.
Mycetoma
A fungal disease
Mycoplasma pneumonia
A form of bacterial pneumonia that is caused by the bacteria species Mycoplasma pneumoniae.
Myiasis
A general term for pathological infection by parasitic fly larvae feeding on the host's living tissue.
Necrotizing fasciitis (NF)
Necrotizing fasciitis (NF), commonly known as flesh-eating disease or Flesh-eating bacteria syndrome, is a rare infection of the deeper layers of skin and subcutaneous tissues, easily spreading across the fascial plane within the subcutaneous tissue.
Neonatal conjunctivitis (Ophthalmia neonatorum)
Neonatal conjunctivitis, also known as ophthalmia neonatorum, is a form of bacterial conjunctivitis contracted by newborns during delivery.
Nocardiosis
Nocardiosis is an infectious disease affecting either the lungs (pulmonary nocardiosis) or the whole body (systemic nocardiosis).
Onchocerciasis (River blindness)
A parasitic disease caused by infection by Onchocerca volvulus, a nematode (roundworm).
Paracoccidioidomycosis (South American blastomycosis)
A fungal infection caused by the fungus Paracoccidioides brasiliensis
Paragonimiasis
A food-borne parasitic infection caused by the lung fluke, most commonly Paragonimus westermani
Parasites
A plant or animal that lives on or in another, usually larger, host organism in a way that harms or is of no advantage to the host.
Pasteurellosis
An infection with a species of the bacteria genus Pasteurella.
Pathogenic microorganisms
Pathogens
A pathogen or infectious agent is a biological agent that causes disease or illness to its host.
Pediculosis capitis (Head lice)
A human medical condition caused by the colonization of the hair and skin by the parasitic insect Pediculus humanus capitis—the head louse.
Pediculosis corporis (Body lice)
A cutaneous condition caused by body lice (specifically Pediculus corporis) that lay their eggs in the seams of clothing.
Pediculosis pubis (Pubic lice, Crab lice)
A disease caused by the crab louse Phthirus pubis, a parasitic insect notorious for infesting human pubic hair.
Pelvic inflammatory disease (PID)
A generic term for inflammation of the uterus, fallopian tubes, and/or ovaries as it progresses to scar formation with adhesions to nearby tissues and organs.
Period of communicability
The period of time when the infectious agent that causes a communicable disease may be transmitted to a susceptible host.
Pertussis (Whooping cough)
A highly contagious bacterial disease caused by Bordetella pertussi.
Pinworm
Pinworm is an intestinal infection caused by tiny parasitic worms.
Plague
A deadly infectious disease that is caused by the enterobacteria Yersinia pestis. Primarily carried by rodents (most notably rats) and spread to humans via fleas.
Pneumococcal infection
Infection caused by Streptococcus pneumoniae.
Pneumococcal pneumonia
A lung infection caused by Streptococcus pneumoniae.
Pneumocystis pneumonia (PCP)
A form of pneumonia, caused by the yeast-like fungus (which had previously been erroneously classified as a protozoan) Pneumocystis jiroveci.
Pneumonia
Pneumonia is an inflammatory condition of the lung especially affecting the microscopic air sacs (alveoli)—associated with fever, chest symptoms, and a lack of air space (consolidation) on a chest X-ray. Pneumonia is typically caused by an infection but there are a number of other causes. Infectious agents include: bacteria, viruses, fungi, and parasites.
Poliomyelitis
An acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route.
Prevotella infection
Infection caused by Prevotella
Primary amoebic
A disease of the central nervous system caused by infection from Naegleria fowleri
meningoencephalitis (PAM)
Progressive multifocal leukoencephalopathy
A rare and usually fatal viral disease that is characterized by progressive damage (pathy) or inflammation of the white matter (leuko) of the brain (encephalo) at multiple locations (multifocal).
Prophylaxis
Any measure taken to prevent health problems.
Psittacosis
Psittacosis also known as parrot disease, parrot fever, and ornithosis is an infectious disease caused by a bacterium called Chlamydophila psittaci
Pubic lice
Pubic lice are small, six-legged creatures that infect the pubic hair area and lay eggs.
Pus
The yellowish or greenish fluid that forms at sites of infection, consisting of dead white blood cells, dead tissue, bacteria, and blood serum.
Q fever
A disease caused by infection with Coxiella burnetii.
Rabies
A viral disease that causes acute encephalitis (inflammation of the brain)
Rash
A general, nonspecific term that describes any visible skin outbreak.
Rat-bite fever
An acute fever caused by bacteria transmitted by rodents.
Respiratory syncytial virus infection
An infection caused by respiratory syncytial virus
Reye syndrome
A sudden (acute) brain damage (encephalopathy) and liver function problems of unknown cause.
Rhinosporidiosis
An infection caused by Rhinosporidium seeberi.
Rhinovirus infection
An Infection caused by rhinovirus
Rickettsial infection
An infection caused by bacteria of the Rickettsia
Rickettsialpox
An illness caused by bacteria of the Rickettsia
Rift Valley fever (RVF)
An infectious disease that causes fever.
Ringworm
A fungal disease of the skin, scalp, or nails in which intensely itchy ring-shaped patches develop.
Rocky mountain spotted fever (RMSF)
The most lethal and most frequently reported rickettsial illness in the United States.
Rotavirus infection
Infection caused by Rotavirus
Rubella
Rubella, commonly known as German measles, is a disease caused by the rubella virus
Salmonellosis
An infection with Salmonella bacteria.
SARS (Severe Acute Respiratory Syndrome)
A respiratory disease in humans which is caused by the SARS coronavirus
Scabies
A contagious skin infection
Scarlet fever
A contagious bacterial infection marked by fever, a sore throat, and a red rash, mainly affecting children.
Schistosomiasis
A parasitic disease caused by several species of trematodes
Sepsis
A potentially deadly medical condition that is characterized by a whole-body inflammatory state and the presence of a known or suspected infection.
Septicemia
A disease caused by toxic microorganisms in the bloodstream.
Sexually transmitted diseases
Sexually transmitted disease (STD), also known as a sexually transmitted infection (STI) or venereal disease (VD), is an illness that has a significant probability of transmission between humans by means of human sexual behavior, including vaginal intercourse, oral sex, and anal sex.
Shigellosis (Bacillary dysentery)
Dysentery caused by bacteria named shigella.
Shingles (herpes zoster)
Shingles (herpes zoster) is a painful, blistering skin rash due to the varicella-zoster virus, the virus that causes chickenpox
Smallpox (Variola)
An infectious disease caused by two virus variants, Variola major and Variola minor
Spirochete
One type of gram-negative bacteria.
Sporotrichosis
A disease caused by the infection of the fungus Sporothrix schenckii
Staphylococcal food poisoning
Food poisoning caused by staphylococcal bacteria.
Staphylococcal infection
A infection caused by staphylococcal bacteria.
Staphylococci (staph)
A type of bacteria
Streptococcal disease
Streptococcal disease is caused by a bacteria known as group A beta-hemolytic streptococcus
Streptococcal pharyngitis or strep throat
An acute sore throat caused by the bacterium Streptococcus pyogenes and accompanied by fever and inflammation.
Streptococci (strep
Strongyloidiasis
A human parasitic disease caused by the nematode (roundworm)
Syphilis
A sexually transmitted infection caused by the spirochete bacterium
Taeniasis
Taeniasis is a form of tapeworm infection which is caused by tapeworms of the genius Taenia.
Tetanus (Lockjaw)
A medical condition characterized by a prolonged contraction of skeletal muscle fibers
Thrush
A fungal infection of the mouth characterized by white patches.
Tick
A small wingless bloodsucking insect that lives on the skin of humans and warm-blooded animals and may transmit diseases. Families: Argasidae, Ixodidae.
Tinea barbae (Barber's itch)
A fungal infection of the hair.
Tinea capitis (Ringworm of the Scalp)
A superficial fungal infection (dermatophytosis) of the scalp.
Tinea corporis (Ringworm of the Body)
A superficial fungal infection (dermatophytosis) of the arms and legs, especially on glabrous skin, however it may occur on any part of the body.
Tinea cruris (Jock itch)
A dermatophyte fungal infection of the groin region in either sex, though more often seen in males.
Tinea manuum (Ringworm of the Hand)
A fungal infection of the hand.
Tinea nigra
A superficial fungal infection that causes dark brown to black painless patches on the palms of the hands and the soles of the feet.
Tinea pedis (Athlete’s foot)
A fungal infection of the skin that causes scaling, flaking, and itch of affected areas
Tinea unguium (Onychomycosis)
A fungal infection of the nail
Tinea versicolor (Pityriasis versicolor)
A condition characterized by a rash on the trunk and proximal extremities.
Toxic shock syndrome
Toxic shock syndrome (TSS) is a potentially fatal illness caused by a bacterial toxin.
Toxins
A poison produced by a living organism.
Toxocariasis (Ocular Larva Migrans (OLM)
An illness of humans caused by a larvae (immature worms) of either the dog roundworm (Toxocara canis) or the cat roundworm (Toxocara cati).
Toxocariasis (Visceral Larva Migrans (VLM)
An illness of humans caused by a larvae (immature worms) of either the dog roundworm (Toxocara canis) or the cat roundworm (Toxocara cati).
Toxoplasmosis
Toxoplasmosis is a parasitic disease caused by the protozoan Toxoplasma gondii.
Transmissible
Able to be transmitted
Trichinellosis
Also called trichinosis or trichiniasis, is a parasitic disease caused by eating raw or undercooked pork.
Trichomonas
A common cause of vaginitis caused by the single-celled protozoan parasite Trichomonas vaginalis
Trichomoniasis
Trichomoniasis, sometimes referred to as "trich", is a common cause of vaginitis.
Trichuriasis (Whipworm infection)
A parasitic infection primarily in the tissue of the cecum, appendix, colon and rectum that is caused by Trichuris trichiura (whipworm), an intestinal parasitic nematode (roundworm).
Tropical disease
Tropical diseases are diseases that are unique to tropical and subtropical regions.
Trypanosoma brucei
A parasite
Tuberculosis
A common, and in many cases lethal, infectious disease caused by various strains of mycobacteria, usually Mycobacterium tuberculosis
Tularemia
Tularemia (also known as Pahvant Valley plague rabbit fever, deer fly fever, and Ohara's fever) is a serious infectious disease caused by the bacterium Francisella tularensis
Tzanck test
Tzanck test, also Tzanck smear, is scraping of an ulcer base to look for Tzanck cells. It is sometimes also called the Chickenpox skin test and the herpes skin test.
Ureaplasma urealyticum infection
Infection caused by Ureaplasma urealyticum
Vaginitis
Inflammation of vagina
Varicella-zoster
Varicella zoster virus (VZV) is one of eight herpes viruses known to infect humans. It commonly causes chicken-pox in children and Herpes zoster (shingles) in adults and rarely in children.
Vector
Disease transmitting organism
Venezuelan equine encephalitis
Venezuelan equine encephalitis virus is a mosquito-borne viral pathogen that causes Venezuelan equine encephalitis or encephalomyelitis (VEE).
Venezuelan hemorrhagic fever
An infectious human illness.
Viral pneumonia
A pneumonia caused by a virus
Viruses
A submicroscopic parasite
West Nile Fever
A virus of the family Flaviviridae
White piedra (Tinea Blanca)
A mycosis of the hair
Yeast
Small single celled fungus
Yellow fever
An acute viral hemorrhagic disease
Yersinia pseudotuberculosis infection
Infection caused by Yersinia pseudotuberculosis
Yersiniosis
Yersiniosis is an infectious disease caused by a bacterium of the genus Yersinia
Zoster
Same as shingles
Zygomycosis
Zygomycosis is the broadest term to refer to infections caused by bread mold fungi of the Zygomycota phylum.
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