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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. Chilblains occur in response to extremely cold temperatures. If you have chilblains you will notice small red itchy painful bumps on your skin, usually in the areas where you feel cold the most: toes, fingers, nose and ears. These bumps appear a few hours after exposure to the cold.hen skin gets cold, the tiny blood vessels under your skin become narrow. When your body heats up again, it is thought that some blood may leak out causing the swelling. If you have poor circulation or other blood vessel problems, you are more likely to get chilblains.