Health Glossary

Demystifying medical language. Browse or search for clear, human-centered explanations of common medical terms.

Depression

A mental health condition characterized by persistent low mood or loss of interest or pleasure, together with other emotional, cognitive,…
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Dermis

The layer of skin beneath the epidermis that provides much of the skin‘s strength, elasticity, nourishment, and structural support. The…
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Diabetes

A group of metabolic disorders characterized by persistently elevated blood glucose levels caused by problems with insulin production, insulin action,…
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Diagnosis

Diagnosis is the process of identifying a disease, condition, or other health problem based on a person’s symptoms, signs, history,…
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Diarrhea

The passage of unusually loose or watery stools, typically occurring more frequently than is normal for the individual. Diarrhea occurs…
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Disease

A condition in which normal structure, function, or regulation of the body or mind is disrupted, producing characteristic changes in…
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Disinfection

Disinfection is the process of reducing or eliminating harmful microorganisms on inanimate objects or surfaces using physical or chemical methods.…
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DNA

Deoxyribonucleic acid (DNA) is the molecule that stores the genetic information used to build and maintain living cells and organisms.…
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Dose

The amount of a substance or other agent received by or reaching an organism, usually considered in relation to body…
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Drug

A substance that produces a biological effect by altering processes in an organism and that may be used medically or…
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Dysentery

An intestinal illness characterized by diarrhea containing blood and often mucus, usually resulting from inflammation of the intestine. Dysentery is…
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