Hand-foot-mouth disease

Hantavirus disease

Hay fever

Head and neck cancer

Head injury

Headaches

Health Maintenance Organization

Health care administration

Health care system

Health insurance

Health screening

Hearing aids and implants

Hearing loss

Hearing tests

Heart attack

Heart catheterization

Heart failure

Heart murmurs

Heart surgery for congenital defects

Heart valve disorders

Heart-lung machine

Heat disorders

Heat treatments

Heavy metal poisoning

Heimlich maneuver

Hemophilia

Hemorrhagic fevers

Hemorrhoids

Hepatitis

Herbal remedies, western

Hernia

Herniated disk

Hiccups

High-risk pregnancy

Hirschsprung's disease / Congenital megacolon

Hirsutism

Histoplasmosis

Hives

Hodgkin's disease

Holistic medicine

Home health care

Homeopathic medicine

Homicide

Hookworm disease

Hormone replacement therapy

Hospices

Hospital-acquired infections

Hospitals

Hotlines

Human anatomy