Etiology: The cause of granuloma annulare is unknown. Granuloma annulare can occur at any age, but is seen predominantly in children and young adults. It occurs more frequently in females than males.

This is a 2-month old female with a history of a hemangioma on her right buttock since 2 weeks of age. The lesion began as a small birthmark and has continued to grow, and is now ulcerated.