Actinic granuloma (O'Brien).

Twelve cases of actinic granuloma (O'Brien) are reported. It is concluded that actinic granuloma is a specific disease characterized by clinical lesions indistinguishable from granuloma annulare, but occurring on solar damaged skin. Histologically, elastic tissue is destroyed by the granulomatous process in actinic granuloma, but not in granuloma annulare. It would appear that actinic granuloma, granuloma multiforme, necrobiosis lipoidica of the face and scalp (Wilson-Jones) and Miescher's granuloma of the face (Mehregan and Altman) are the same disease.