Abstract
Three patients, one of whom has been previously reported, had erythematous papules and nodules of the face and upper part of the chest during cyclosporine therapy for inflammatory skin diseases. Histologic examination and DNA analysis (performed in two cases) revealed benign dermal lymphocytic infiltrates. In two cases proliferation of only T cells occurred. In the third case, both T and B cell populations were expanded and there was vacuolar degeneration of the basal layer of the epidermis and IgG, IgM, and C3 deposition along the dermoepidermal junction. These findings may be the result of cyclosporine-induced immune dysregulation. The lesions resolved in all patients after therapy was stopped.
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