Hi, It seems that you are having ..erythema annulare centrifugum. Most commonly, no cause is found for the erythema annulare centrifugum (EAC).However, there may be association with other diseases. Often, the eruption of EAC resolves after treatment of the underlying illness. Precipitating cause may be infection,stress,drugs,neoplasms, food..etc Erythema annulare centrifugum (EAC) is usually self-limited. Topical steroids usually cause involution of the treated lesions, but they do not prevent the occurrence of new lesions or recurrence of the eruption. Systemic or injection steroid therapy is effective, but the eruption returns once these drugs are withdrawn. Therefore, a search for and treatment of the underlying disorder is the primary therapy. Remember that no cause is found in most cases. You consult dermatologist for perfect diagnosis and treatment. I hope you got my answer.. Thanks.. Dr. Ilyas Patel MD