Acanthosis nigricans: This skin condition causes areas of skin to darken and thicken as shown here on this 15-year-old girl's hands. Acanthosis nigricans: Overview What is acanthosis nigricans? Acanthosis nigricans (ay-can-THOE-sis NIE-gri-cans) (AN)  is a skin condition that causes one

Chemical peels: Overview Also called chemexfoliation, derma peeling Do you wish that you could simply peel signs of aging from your skin? Dermatologists use chemical peels to do just this. A chemical peel can diminish many signs of aging on the face as well as the hands, neck, and chest. Chemical peels