Generalized perforating granuloma annulare with varioliform scars: A case report

Abstract

<span>Perforating granuloma annulare (PGA) is a rare subtype of GA. It is characterized by crops of erythematous umblicated or scaly papules. Plaques, pustule-like lesions and scars may also be seen. It can be localized or generalized.</span><br /><span>Transepithelial elimination of mucinous, degenerating collagen fibers and surrounding palisading lymphohistiocytic granulomas, are important histologic features.</span><br /><span>The patient reported here was a 23-year-old man with recurrent crops (every few weeks) of umbilicated papular lesions predominantly affecting trunk and extremities for 8 years, which resolved with varioliform scars.</span>