A Case of Papulonecrotic Tuberculid Combined with Erythema Induratum / 대한피부과학회지

We report a rare case in which two tuberculids, erythema induratum and papulonecrotic tuberculid, occured together. A 15-year-old Korean girl had two types of clinically distinct lesions; painful subcutaneous nodules on the legs and pruritic necrotic papules on the trunk and extremity. Mantoux test showed a strong positive reaction. Histopathologic findings of the subcutaneous nodule and necrotic papule were consistent with erythema induratum and papulonecrotic tuberculid, respectively. There was no extracutaneous focus of tuberculosis. Polymerase chain reaction for tuberculosis bacilli in both lesions revealed negative results. Antituberculous therapy brought a rapid clinical improvement of lesions within a month.