Medical Dictionary

Health Glossary

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

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Epidemic

A sudden increase in the number of disease cases in a particular area or population. An epidemic affects more people…

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Epidemic

A sudden increase in the number of disease cases within a community or region. An epidemic: Related:

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Epidemic Curve

A graph used in public health to show how disease cases increase or decrease over time during an outbreak. It…

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Epidermis

The epidermis is the outermost layer of the skin and forms the body’s primary protective barrier against the external environment.…

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Fatigue

A strong feeling of physical or mental exhaustion that does not improve fully with normal rest. Fatigue can be caused…

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Fetus

The developing baby in the womb after the early embryonic stage. The fetal stage involves: Related:

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Fever

A rise in body temperature, usually caused by infection or inflammation. Fever is a symptom, not a disease itself. It…

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Fibrous Tissue

Fibrous tissue is connective tissue that contains large amounts of collagen fibres and provides strength and structural support to the…

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Friction

Friction is the rubbing of one surface against another. Repeated friction can irritate the skin and worsen existing acne lesions.…

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Fungus

A type of organism that can sometimes cause infection. Fungal infections may affect: Related:

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Genetics

The study of inherited traits passed from parents to children. Genetics can influence: Related:

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Gland

A gland is an organ or group of specialised cells that produces and releases substances needed by the body. Some…

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Glucose

A type of sugar that the body uses for energy. Glucose comes from: The body regulates glucose using insulin. Related:

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Gynecology

The area of medicine focused on women’s reproductive health. It includes care related to: Related:

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Hair follicle

A hair follicle is a tiny tunnel-like structure in the skin from which a hair grows. Each hair follicle is…

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Heart Attack

A serious condition that happens when blood flow to part of the heart becomes blocked. Symptoms may include: Related:

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Heart Disease

A general term for conditions affecting the heart. Examples include: Related:

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Hemoglobin

A protein in red blood cells that carries oxygen around the body. Low hemoglobin levels can contribute to anemia and…

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Hepatitis

Inflammation of the liver. Hepatitis may be caused by: Symptoms may include: Related:

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Herd Immunity

Protection that occurs when enough people in a population become immune to a disease, making spread less likely. Vaccination helps…

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HIV

A virus that attacks the immune system and weakens the body’s ability to fight infections. Without treatment, HIV can progress…

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Homeostasis

Homeostasis is the body’s ability to maintain a stable internal environment despite changes inside or outside the body. Processes such…

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Hormone

A hormone is a chemical messenger that helps regulate the activity of cells, tissues, and organs. Hormones are produced mainly…

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Hygiene

Practices that help maintain cleanliness and reduce disease spread. Examples include: Related:

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