noun
Medical term for skin damage caused by cold, covering both chilblains (itching, swelling) and more severe frostbite. In everyday conversation, しもやけ is more common for chilblains.
凍瘡は寒冷環境で発生しやすい皮膚障害です。
Chilblains are skin lesions that tend to occur in cold environments.
登山中に凍瘡になり、指先が紫色に変色した。
I got frostbite while mountain climbing, and my fingertips turned purple.