A member asked:

What does raised skin under your armpits mean ?

A doctor has provided 1 answer

Thickened skin?: Thickened, dark skin under the arms is a sign of acanthosis nigricans. Acanthosis is a velvety thickening of the skin that occurs most commonly in Insulin resistance (pre-diabetes) or other hormone disorders. If this is what you are describing, please see your dermatologist for evaluation and management.

Answered 6/25/2014

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