| Summary: | Tuberculosis (TB) is on the rise particularly in developing countries like India. The lung happens to be the most common site for the occurrence of the same, but extra pulmonary manifestation is not that uncommon. Joint involvement in TB is usually monoarticular, rarely may present as polyarthritis. Reactive arthritis in TB is known as Poncet's disease, a rare aseptic form of arthritis characterized by polyarticular impairment observed in patients with active TB, with no evidence of direct bacillary invasion of the joints. The condition is different from tuberculous arthritis which is usually monoarticular and is caused by direct tubercular involvement of the joint. A 40 year female patient reported with gradually enlarging swelling of left preauricular region and painful joints based on clinical history and investigations she was diagnosed with Poncet's disease.
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