Paradoxical reaction in the form of pleural effusion after onset of anti-tuberculous medication for tubercular lymphadenitis.

We present the case of a 26-year-old Indian male who developed pleural effusion while undergoing treatment for tuberculous lymphadenitis. We describe the work-up for his condition and how he was managed. The possibility of development of a paradoxical reaction in the form of pleural effusion after initiation of anti-tuberculous therapy has to be kept in mind while treating such patients.