Home > Health Library > Acanthosis Nigricans
Acanthosis nigricans is a skin condition that results in
darkened skin and velvety growths that look like warts. These skin changes can
occur under the arm, on the back of the neck, over finger and toe joints, or in the groin and genital
In adults, acanthosis nigricans may be a sign of
disorders of the hormone system (endocrine system). It can occur in people who are very overweight
(obese). It may be a sign of lung cancer or of a cancer of the digestive system. It can
occur in people who have type 2 diabetes and in people who are resistant to insulin
but have not yet developed type 2 diabetes. Acanthosis nigricans can occur
in women who have polycystic ovary syndrome (PCOS).
Current as of:
May 23, 2016
E. Gregory Thompson, MD - Internal Medicine & Adam Husney, MD - Family Medicine & David C.W. Lau, MD, PhD, FRCPC - Endocrinology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
I Want To...
Join Our Social Network