DERMPICS / SCIENCE PHOTO LIBRARY DERMPICS / SCIENCE PHOTO LIBRARY
Urticaria rash showing an arcuate ring shape. Urticaria (also called hives) is a response of the body's immune system, usually to an allergen, stress or a drug. The rash is itchy and painful. Treatment is to avoid the underlying cause. This is an idiopathic rash, which means that its cause is unknown.
Model release not required. Property release not required.