disease /dis·ease/ (dĭ-zēz´) any deviation from or interruption of the normal structure or function of any body part, organ, or system that is manifested by a ...

A disease is an abnormal condition affecting the body of an organism. It is often construed to be a medical condition associated with specific symptoms and signs.

Infectious diseases, also known as transmissible diseases or communicable diseases comprise clinically evident illness (i.e., characteristic medical signs and/or ...

National Institute on Aging 31 Center Drive, MSC 2292, Bethesda, MD 20892. National Institutes of Health. U.S. Department of Health & Human Services

Parkinson's disease is a disorder of the brain that leads to shaking (tremors) and difficulty with walking, movement, and coordination.

Peripheral arterial disease is a disease in which plaque builds up in the arteries that carry blood to your head, organs, and limbs.

Provides general information on what Crohn's disease is and how it develops. Describes symptoms, diagnosis, potential complications, and treatment.

Mad cow is an infectious disease in the brain of cattle. Variant Creutzfeldt-Jakob disease (vCJD) is the human form of mad cow disease. Get the facts on vCJD symptoms ...

Celiac disease — Comprehensive overview covers symptoms, treatment of this digestive condition affecting children, adults.

Graves' disease — Comprehensive overview covers symptoms, causes, treatment of this thyroid disorder.