Sinai Dr. Allison Truong is a comprehensive dermatologist who cares for families, treating patients from ...

Gabriele Muekusch, RN, is a Staff Nurse, Phototherapy Education and Research Centre, Women's College Hospital, Toronto, Ontario, Canada. Judith Pitman, RN, is a Staff Nurse, Phototherapy Education ...

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.