Hepatitis A (HAV, Hep A) Glossary of Terms

The following are health and medical definitions of terms that appear in the Hepatitis A (HAV, Hep A) article.

Abdomen: The belly, that part of the body that contains all of the structures between the...

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Acetaminophen: A nonaspirin pain reliever or analgesic. Acetaminophen may be given alone t...

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Antibody: An immunoglobulin, a specialized immune protein, produced because of the introdu...

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Belly: That part of the body that contains all of the structures between the chest and t...

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Bile: Bile is a yellow-green fluid that is made by the liver, stored in the gallbladder an...

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Breastfeeding: Feeding a child human breast milk. According to the American Academy of Ped...

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CDC: The Centers for Disease Control and Prevention, the US agency charged with tracking a...

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Cell: The basic structural and functional unit of any living thing. Each cell is a small c...

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Centers for Disease Control and Prevention: The US agency charged with tracking and invest...

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Chronic: In medicine, lasting a long time. A chronic condition is one that lasts 3 months ...

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Contagious: capable of being transmitted from one human to another human via direct or ind...

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Cure: 1. To heal, to make well, to restore to good health. 2. A time withou...

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Dehydration: Excessive loss of body water. Diseases of the gastrointestinal tract that cau...

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Delirium: A sudden state of severe confusion and rapid changes in brain function, sometime...

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Diagnosis: 1 The nature of a disease; the identification of an illness. 2 A ...

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Diarrhea: A common condition that involves unusually frequent and liquid bowel movements. ...

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Emergency department: The department of a hospital responsible for the provision of medica...

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Endemic: A characteristic of a particular population, environment, or region. Examples of ...

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Epithelium: The outside layer of cells that covers all the free, open surfaces of the body...

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Fatigue: A condition characterized by a lessened capacity for work and reduced efficiency ...

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Feces: The excrement discharged from the 'intestines.

Fever: Although a fever technically is any body temperature above the normal of 98.6 F (37...

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Genome: All the genetic information possessed by any organism (for example, the human geno...

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GI tract: Short for gastrointestinal tract. See: Gastrointestinal tract.

Havrix: A vaccine that is made from killed hepatitis A virus (HAV) and is intended to stim...

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Headache: A pain in the head with the pain being above the eyes or the ears, behind the he...

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Hepatitis: Inflammation of the liver, irrespective of the cause. Hepatitis is caused by a ...

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Hepatitis A: Inflammation of the liver caused by the hepatitis A virus (HAV). HAV is usual...

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Hepatitis B: Inflammation of the liver due to the hepatitis B virus (HBV), once thought to...

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Hepatitis C: Inflammation of the liver due to the hepatitis C virus (HCV), which is usuall...

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Hygiene: The science of preventive medicine and the preservation of health. Also commonly ...

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Immune: Protected against infection, usually by the presence of antibodies.

Immune system: A complex system that is responsible for distinguishing a person from every...

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Immunity: The condition of being immune. Immunity can be innate'for example, humans are in...

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Infection: The invasion and multiplication of microorganisms such as bacteria, viruses, an...

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Inflammation: A localized reaction that produces redness, warmth, swelling, and pain as a ...

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Jaundice: Yellow staining of the skin and sclerae (the whites of the eyes) by abnormally h...

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Liver: The largest solid organ in the body, situated in the upper part of the abdomen on t...

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Liver disease: Liver disease refers to any disorder of the liver. The liver is a large org...

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Mouth: 1. The upper opening of the digestive tract, beginning with the lips and con...

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Nausea: Stomach queasiness, the urge to vomit. Nausea can be brought on by many causes, in...

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Pain: An unpleasant sensation that can range from mild, localized discomfort to agony. Pa...

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Pregnancy: The state of carrying a developing embryo or fetus within the female body. Thi...

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Prognosis: The forecast of the probable outcome or course of a disease; the patient's chan...

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Protein: One of the three nutrients used as energy sources (calories) by the body. Protein...

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Rash: Breaking out (eruption) of the skin. A rash can be caused by an underlying medical c...

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Replication: A turning back, repetition, duplication, reproduction.

Rib: One of the 12 paired arches of bone that form the skeletal structure of the chest wal...

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Rib cage: The structure formed by the thoracic vertebrae and ribs, the sternum (breastbone...

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RNA: Ribonucleic acid.

Serum: The clear liquid that can be separated from clotted blood. Serum differs from plas...

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Stool: The solid matter that is discharged in a bowel movement.

Symptom: Any subjective evidence of disease. In contrast, a sign is objective. Blood comin...

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Tired: A feeling of a lessened capacity for work and reduced efficiency of accomplishment,...

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Tiredness: See: Tired.

Tylenol: See: Acetaminophen.

Urine: Liquid waste produced by the kidneys. Urine is a clear, transparent fluid that norm...

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Vaccination: Injection of a killed microbe in order to stimulate the immune system against...

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Vaccines: Microbial preparations of killed or modified microorganisms that can stimulate a...

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VAQTA: A vaccine against hepatitis A made of killed hepatitis A virus to stimulate the bod...

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Viral: Of or pertaining to a virus. For example, if a person has a viral rash, the rash wa...

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Virus: A microorganism that is smaller than a bacterium that cannot grow or reproduce apar...

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Viruses: Small living particles that can infect cells and change how the cells function. I...

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