Acanthosis Nigricans

Acanthosis pigmentosa, also called acanthosis nigricans, is an alteration of the skin that produces darker, thickened areas with a velvety texture, especially in folds such as the neck, the armpits, or the groin.

Why it matters to observe it: Beyond its appearance, it can be a skin sign associated with other processes in the body, so its appearance is advisable to evaluate.

Common causes: It is usually linked to metabolic factors and, at times, to hormonal changes or certain medications.

Which specialist treats it? The dermatologist, and in children the pediatric dermatologist, evaluate these skin changes and provide guidance on the pertinent studies. If you notice darkened and thickened areas in the folds, having them assessed by a professional helps understand their cause.