Science

Rubella Definition: Rubella, also called German measles or three-day measles, is a contagious viral infection best known by its distinctive red rash. Aside from the…

Measles (Diagnosis, Treatment, and Prevention) Definition: Measles is a viral disease that can spread rapidly. Also called rubeola, measles can be serious and even fatal…

Measles (Causes, Symptom, and Complications) Definition: Measles (also called rubeola or morbilli) is a childhood infection caused by a virus. Once quite common, measles can…

Ischemia Definition: Ischemia (is-KE’me-ah) is a serious condition in which there are inadequate blood flow and oxygen to a specific part of the body. It…

About Typhus Definition: Typhus is a disease caused by infection with one or more rickettsial bacteria. It is also known as typhus fever. Common symptoms…

Purpura Definition: Purpura, also called blood spots or skin hemorrhages refers to purple-colored spots that are most recognizable on the skin. The spots may also…

Lupus Definition: Lupus is a chronic autoimmune disease in which the body’s immune system becomes hyperactive and attacks normal, healthy tissue. Lupus is systemic, meaning…

Blister Definition: A blister, which is also called a vesicle by medical professionals, is a raised portion of skin that is filled with fluid. It…

Chilblains Definition: Chilblains (CHILL-blayns) are small, itchy swellings on the skin that occur as a reaction to cold temperatures. It also is known as perniones…

About Hypothermia Definition: Hypothermia is a severe condition in which the body temperature drops to an abnormally low level. It occurs when the body is…

Frostbite Definition: Frostbite is an injury caused by freezing of the skin and underlying tissues. In extreme cases, muscle, nerves, and blood vessels may also…

Gangrene Definition: Gangrene is a condition that occurs when body tissue dies when a lack of blood supply in some part of the body, often…