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 …

3 days ago · 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.

Jun 1, 2025 · What is disease? At first glance, the answer seems deceptively simple: disease is the presence of illness, of something going wrong within the body. But the deeper we probe …

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

EID is a monthly peer reviewed journal covering infectious diseases with emphasis on disease prevention, control, and elimination. PCD is a peer reviewed journal covering research, public …

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

A disease or medical condition is an unhealthy state where something bad happens to the body or mind. [1] Diseases can cause pain, parts of the body to stop working the right way, or death.

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 …