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itchy, red swellings on skin from cold exposure

Chilblains, also known as pernio or perniosis, are small, itchy, red or purple swellings on the skin that occur as a reaction to cold temperatures. They typically affect the fingers, toes, ears, and nose, and result from inflammation of small blood vessels in response to repeated exposure to cold but non-freezing air. This condition can cause pain, blistering, and in severe cases, ulceration.

Related Terms

• Frostbite
• Raynaud's phenomenon
• Calciphylaxis
• Cutaneous Vasculitis
• Bullous Lesions
• Diabetic Dermopathy
• Erythema Nodosum
• Blisters