A disease is a particular abnormal condition that adversely affects the structure or function of all or part of an organism and is not immediately due to any external injury. [1] Diseases are often …

Oct 30, 2025 · Disease is any harmful deviation from the normal structural or functional state of an organism. It generally is associated with certain signs and symptoms.

Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic.

Jun 5, 2025 · NIAMS research focuses on arthritis & musculoskeletal & skin diseases. Learn about symptoms , causes, & treatment for more than 50 diseases and conditions.

The meaning of DISEASE is a condition of the living animal or plant body or of one of its parts that impairs normal functioning and is typically manifested by distinguishing signs and symptoms : …

DISEASE definition: 1. (an) illness of people, animals, plants, etc., caused by infection or a failure of health rather…. Learn more.

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DISEASE definition: a disordered or incorrectly functioning organ, part, structure, or system of the body resulting from the effect of genetic or developmental errors, infection, poisons, nutritional …

Learn more about health from Cleveland Clinic experts. An alphabetic listing covers medical conditions, testing, diagnosis, treatment and ongoing care.

6 days ago · The outbreak blamed on "gym exposure" is relatively small, but it has helped push cases tied to the Legionella bacteria to a 10-year high in Florida.