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Home Knowledge Center Wellness Library Acanthosis nigricans

Acanthosis nigricans

Acanthosis nigricans is a common skin condition that causes patches of thicker skin that are usually darker than the nearby skin. They are found most often on the neck or the underarm (axilla). But they also can occur on other areas of the body.

Acanthosis nigricans may be caused by different things. These include being very overweight, having insulin resistance or diabetes, or taking some medicines. In rare cases, it occurs when a person has cancer in another part of the body, like the stomach.

The patches usually don't cause any symptoms or need treatment. Some people choose to treat it if it is having an effect on their life. When possible, treatment of the underlying cause works best. Sometimes a medicine is prescribed that can be put on the patches to help them go away.

Current as of: November 16, 2023

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

To learn more about Ignite Healthwise, LLC, visit webmdignite.com.

© 2024 Ignite Healthwise, LLC. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Ignite Healthwise, LLC.

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