Acanthosis Nigricans (Dark neck /Black neck)

It is a common skin problem, observed as darkening and thickening of the skin over the neck, underarms, and face; frequently mistaken as dirt accumulation around the neck. The darkening of the skin is due to the excess multiplication of skin cells at areas mentioned earlier due to increased insulin levels in the blood, especially in people with Type 2 diabetes and obesity.

A dermatologist can diagnose acanthosis nigricans and can differentiate from other skin discoloration conditions. Acanthosis Nigricans is a marker of insulin resistance or pre-diabetes. Weight loss and exercise can be of great help reversing insulin resistance along with medications.