Annular elastolytic giant cell granuloma (AEGCG) is a rare granulomatous and elastolytic skin disease of unknown pathogenesis. Therapy for AEGCG is controversial. The data about the effectiveness of chloroquine in the treatment of AEGCG are also variable. Here, we report a case of AEGCG with significant improvement after a total treatment period of 22 weeks with hydroxychloroquine. Although a possibility of spontaneous remission cannot be ruled out, we think that chloroquine can be considered as an effective treatment of this chronic disorder.

We herein report a 12-year-old boy with amoxicillin-induced, recurrent, site-specific, symmetrical, sharply demarcated reddish plaques on the buttocks and the major flexural and intertriginous areas. The lesions resolved with topical corticosteroids, leaving hyperpigmentation. Histopathology showed nonspecific features of inflammation and dermal melanophages. Amoxicillin was the probable inducer based on oral provocation test with Amoksina(®) tablet, however patch testing with amoxicillin on previously affected and unaffected skin remained negative. The diagnosis was challenging because of the overlapping features of symmetrical drug-related intertriginous and flexural exanthema and fixed drug eruption. This one represents a unique and challenging one with overlapping clinical features of symmetrical drug-related intertriginous and flexural exanthem (SDRIFE) and fixed drug eruption (FDE). We discuss the possible immunopathogenetic mechanisms leading to the simultaneous occurrence of different phenotypes of drug eruption in the same patient.

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