OverviewPus-filled lesions (pustules) are unusual in alopecia areata, but can occur, as in this picture. The pustules are infected where medication was injected into the area.
Review Date 10/24/2016
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, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.