Granuloma annulare is a fairly rare, chronic dermatological autoimmune condition which presents as reddish bumps on the skin arranged in a circle or ring. The rings are caused by an autoimmune reaction that causes over-productive leukocytosis, an over abundant production of white blood cells. These WBCs do not flow freely through the blood but instead clump together and can not effectively move through thin capillaries, rising to just underneath the surface of the patient's skin, resulting in the characteristic rings. It can initially occur at any age and is significantly more common in females (80/20 ratio).
