Hamadan University of Medical Sciences Avicenna Journal of Clinical Microbiology and Infection 2383-0298 5 1 2018 02 01 Erythema Induratum of Bazin: A Rare Presentation of Tuberculosis 64161 64161 10.5812/ajcmi.64161 EN Seyyed Hamid Hashemi https://orcid.org/0000-0001-9838-7394 Mahmoud Farshchian Hamidreza Ghasemi Basir Maria Shirvani Journal Article 10.5812/ajcmi.64161 2017 04 07 2017 12 21 Erythema induratum of bazin (EIB) is a hypersensitivity reaction to Mycobacterium tuberculosis infection. The diagnosis can be difficult because tubercle bacilli are usually not found in smears or cultures of lesions. This study reports on a case of EIB in a 13-year-old female, who presented multiple tender nodules on her lower extremities. Biopsy of the nodule revealed histopathologic changes compatible with erythema induratum. QuantiFERON test was positive. The patient received a 6-month duration of anti-tuberculosis treatment. The lesions disappeared during therapy, and no pigmentation was observed at the end of treatment. After a year of follow up, there was no recurrence of the disease.