Acne is a skin condition that causes whiteheads, blackheads, and inflamed red lesions to form. These growths are commonly called pimples or "zits." Three out of four teenagers have acne to some extent.
Update Date 11/20/2012
Updated by: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.