OverviewWhen redness appears in ring shapes on the body, it is referred to as erythema annulare, shown here on the forearm. There are generally no symptoms, with the exception of mild itching (pruritus). It may be associated with serious diseases, but in the majority of cases, an underlying illness is never discovered.
Update Date 12/2/2014
Updated by: Richard J. Moskowitz, MD, dermatologist in private practice, Mineola, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.