Chilblains
Chilblains
Chilblains (/ˈtʃɪlbleɪnz/), also known as pernio and perniosis, is a medical condition that occurs when a predisposed individual is exposed to cold and humidity, causing tissue damage. It is often confused with frostbite and trench foot.
Etymology
The term "chilblains" is derived from the Old English words "chill" (cold) and "blegen" (sore). The term "pernio" is derived from the Latin "perniones", meaning "chilblains".
Symptoms
Chilblains are characterized by the appearance of small, itchy, red patches on the skin, often on the fingers, toes, ears, and nose. These patches can become increasingly painful, swell, and may blister. In severe cases, the skin may break down and become ulcerated.
Causes
Chilblains are caused by an abnormal reaction of the body to cold. The exact cause of this abnormal reaction is not known, but it is thought to be related to the body's temperature regulation system, the circulatory system, and the nervous system.
Treatment
Treatment for chilblains includes keeping the affected areas warm, using topical creams to relieve itching and inflammation, and in severe cases, taking medication to improve circulation.
Prevention
Prevention of chilblains involves keeping the body warm in cold weather, avoiding rapid changes in temperature, and keeping the skin dry.
Related Terms
External links
- Medical encyclopedia article on Chilblains
- Wikipedia's article - Chilblains
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