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Tuberculosis (TB) is a very common health problem in developing nations such as India. It can present as its primary form or as secondary forms (extrapulmonary TB). Maxillofacial manifestations of TB compose nearly 10% of all extrapulmonary manifestations of the disease. Extrapulmonary TB involving the maxillofacial region is very rare and can present in any tissues in this region. These infections generally involve the head and neck through hematogenous or lymphatic routes. Very few cases of primary TB of the temporomandibular joint (TMJ) have been reported in the literature. The presentation of TB infection of the TMJ can resemble arthritis, osteomyelitis, or any other kind of chronic joint disease. It is very important to diagnose this disease at an early stage. If left untreated, it can prove fatal within 5 years in more than half the cases. Therefore, early diagnosis and management of these cases is critical. This article describes a case of primary TB of the TMJ that presented as a preauricular swelling. [ABSTRACT FROM AUTHOR]