Acanthosis nigricans: A skin condition characterized by dark thickened velvety patches, especially in the folds of skin in the axilla (armpit), groin and back of the neck. The condition is complex. It can occur with endocrine diseases such as Cushing disease, tumors of the pituitary, and diabetes mellitus. It is common in people who have insulin resistance -- whose body is not responding correctly to the insulin that they make in their pancreas. Acanthosis nigricans also occurs with underlying malignancies (especially carcinomas of the vicera), administration of certain drugs, and as a genetic disorder inherited in an autosomal dominant manner.
Acanthosis nigricans is a disorder that may begin at any age. It causes velvety, light-brown-to-black, markings usually on the neck, under the arms or in the groin.
Acanthosis nigricans â€” Comprehensive overview covers causes, treatment of this skin condition.
Although Addison may have seen a case of acanthosis nigricans (AN) before 1885 and misdiagnosed it as , the first documented case of acanthosis nigricans was ...
Acanthosis nigricans is a skin disorder in which there is darker, thick, velvety skin in body folds and creases.
Learn what causes acanthosis nigricans, a skin condition, and how it can be treated.