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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.
Chilblains most commonly occur on the toes and the fingers but can also appear on the ears, nose, and other areas that are not protected from the cold. These skin patches, which are often painful, are the result of the inflammation of small blood vessels and can also appear as swellings, blisters, or ulcerations.