Chilblains, also called perniosis or blain, when occurring on the feet, is a medical condition that is often confused with frostbite and trench foot. Chilblains are acral ulcers that occur when a predisposed individual is exposed to cold and humidity. Causes are idiopathic or manifestations of serious medical conditions that need to be investigated. Chilblains can be prevented by keeping the feet and hands warm in cold weather. Smoking cessation is advised. A consultation with a dermatologist is mandatory.

• Ulceration of the digits and toes
• Itchy skin inflammation
• Skin redness
• Toe skin inflammation
• Finger skin inflammation
• Earlobe inflammation

With treatment, chilblains usually heal within 3 weeks

• Keep area warm
• Avoid scratching
• Anti-itch creams, such as Calamine lotion
• Zambuk ointment
• Nifedipine may be used in more severe or recurrent cases.^[1] Its vasodilation helps reduce pain, facilitate healing and prevent recurrences.^[2]

• Avoid cold exposure
• Wear gloves
• Use warm footwear
• Keep hands and feet warm
• Healthy diet
• Exercise
• High doses of vitamin K

• Trench foot
• Frostbite

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