OverviewAcne lesions frequently contain pus. This close-up photograph shows small acne pustules with surrounding inflammation (erythema).
Review Date 7/25/2017
Updated by: David L. Swanson, MD, Vice Chair of Medical Dermatology, Associate Professor of Dermatology, Mayo Medical School, Scottsdale, AZ. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.