“…cyclosporine and methotrexate), pentoxifylline, prostaglandin E1, intravenous immunoglobulin, penicillamine, antibiotics, systemic corticosteroids, and intralesional, factor XIII, aminobenzoate, colchicine and DMSO gel, radiotherapy, photochemotherapy with psoralen and ultraviolet A (PUVA), and recently, tamoxifen and irradiation with electron beam. 36 , 41 , 42 , 50 , 59 , 60 The therapy may be effective, probably due to the upregulation of collagenase synthesis by fibroblasts and subsequent degradation of collagen fibers. 33 , 60 , 61 …”