Palmoplantar keratoderma is a rare disease where thick patches of skin develop on the hands and feet.

掌跖角一种罕见，患者手脚会出现增厚性斑片。

Specific risk factors include alcohol, hot fluids, caustic strictures, Plummer-Vinson syndrome, and palmoplantar keratosis.

特有危险因素包括饮酒、喝热液、腐性食管狭窄、Plummer-Vinson综合征与掌跖角。

Sometimes I'm feeling crazy, and I put it on my arms a little bit too, because it's exfoliating, resurfacing, and I've got keratosis polaris, KP, thing on my arms and I'll do anything to mitigate that.

有时感觉很疯狂， 也把它放在手臂上一点点，因为它正在去角质， 重塑皮肤，手臂上有北极角， KP，会做任何事情来减轻它。