Where Does Acanthosis Nigricans Occur?

It typically affects the armpits, groin and neck. Acanthosis nigricans is a skin condition characterized by areas of dark, velvety discoloration in body folds and creases. The affected skin can become thickened. Most often, acanthosis nigricans affects your armpits, groin and neck.

Does acanthosis nigricans always mean diabetes?

Acanthosis nigricans is a treatable skin condition that causes dark patches on your body. It is often (though not always) a sign of prediabetes or diabetes. Talk to your healthcare provider to find out if you have an underlying condition causing AN.

Why does acanthosis nigricans happen?

Acanthosis nigricans skin patches occur when epidermal skin cells begin to reproduce rapidly. This abnormal skin cell growth is most commonly triggered by high levels of insulin in the blood. In rare cases, the increase in skin cells may be caused by medications, cancer, or other medical conditions.