Dark Skin Patch: Cause for Concern?

caption id=”attachment_2147″ align=”aligncenter” width=”293″] Acanthosis Nigricans in the Armpit[/caption] The dark discoloration in the skin could be Acanthosis Nigricans (AN). AN is typically a dark raised area and can be velvety.  It can show up anywhere in the skin. Common locations are the armpits, the face, elbows, knuckles, back of the neck, chest, and groin….