Pityriasis lichenoides chronica successfully treated with combination of narrowband UVB phototherapy and cyclosporine: a case report

Pityriasis lichenoides chronica (plc) is a chronic skin disorder with unknown etiology. this disorder still poses difficulty in diagnosis and treatment. currently, there is no guideline established for the treatment of plc. most of the proposed therapy show transient or limited effects. combination therapy is usually the best approach. a 40-year-old man presented with erythematous papules appearing recurrently in crops in the last nine months localized mainly to the trunk and proximal extremities. a complete response was not achieved with topical and systemic corticosteroids. the combination of narrowband uvb phototherapy and cyclosporine showed satisfying results following a short duration of therapy. a complete response was seen after eight sessions of narrowband uvb phototherapy. no side effects were observed. the combination therapy of phototherapy and cyclosporine is a potential choice that needs to be considered in the management of plc.