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Chilblains (/ËtÊÉªlbleÉªnz/) â also known as pernio, Chill Burns and perniosis â 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.
In general, chilblains are caused by a unique way of reaction to oneâs body to cold. This primarily happens when a person has been exposed to cold and then was immediately warmed. The immediate change in temperature affects or causes the small blood vessels found under the skin to become expanded or dilated.