RT Journal Article T1 Erythema Nodosum as Azathioprine Hypersensitivity Reaction in a Patient with Bullous Pemphigoid. A1 Vargas-Hitos, Jose Antonio A1 Sabio, Jose Mario A1 Tercedor, Jesús A1 Navarrete-Navarrete, Nuria A1 Jiménez-Alonso, Juan K1 Azathioprine K1 bullous pemphigoid K1 erythema nodosum K1 hypersensitivity syndrome K1 Azatioprina K1 Eritema Nudoso K1 Penfigoide Ampolloso K1 Hipersensibilidad a las Drogas K1 Femenino AB A 65-year-old woman with bullous pemphigoid presented with fever and several red-purple nodular subcutaneous lesions on both lower legs 1 week after starting treatment with azathioprine (AZA). Biopsy of a skin nodule was compatible with erythema nodosum (EN) and hypersensitivity reaction to AZA was suspected. AZA was subsequently discontinued, observing complete remission of fever and EN within 2 weeks. This case highlights the importance of recognizing EN as a possible manifestation of hypersensitivity reaction to AZA. PB Medknow Publications SN 0019-5154 YR 2013 FD 2013-08-30 LK http://hdl.handle.net/10668/1312 UL http://hdl.handle.net/10668/1312 LA es NO Vargas-Hitos JA, Sabio JM, Tercedor J, Navarrete-Navarrete N, Jiménez-Alonso J. Erythema Nodosum as Azathioprine Hypersensitivity Reaction in a Patient with Bullous Pemphigoid. Indian J Dermatol. 2013 ; 58(5):406 NO JOURNAL ARTICLE; DS RISalud RD Apr 13, 2025