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 …

Dec 12, 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.

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 …

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 : …

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

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

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.

Human disease - Classifications, Causes, Symptoms: Classifications of diseases become extremely important in the compilation of statistics on causes of illness (morbidity) and causes …

Human disease is an impairment of the healthy state of the human body that interrupts or modifies vital functions. Disease may be trivial if the impairment is minimal. It may also be associated …