Left hand abscess as a paradoxical reaction during treatment of disseminated tuberculosis in immunocompetent patient: case report and review of literature.

A paradoxical reaction (PR) during the treatment of tuberculosis was defined as the worsening of preexisting disease either clinically or radiologically or the appearance of a new tuberculous lesion. These reactions are frequently observed in patients coinfected with human immunodeficiency virus (HIV) upon the initiation of antiretroviral therapy (ART). Herein, we present a unique case of a paradoxical reaction in a previously healthy 19-year-old female who started anti-tuberculosis treatment for disseminated tuberculosis. Four weeks after treatment initiation, she developed two new swollen masses in her left dorsum of the hand, accompanied by fever and new right submandibular painful lymphadenopathy, with worsening of the preexisting left lower neck lymph node. The patient underwent needle aspiration from her new skin abscess on the dorsum of her left hand, which revealed positive polymerase chain reaction (PCR) for Mycobacterium tuberculosis. Anti-tuberculosis treatment was continued, and the patient fully recovered. We described an unusual presentation of paradoxical reaction manifested by a skin abscess at a site distant from her primary disease in an immunocompetent TB patient, which demonstrated the importance of considering paradoxical reactions in HIV-negative patients who present with worsening signs and symptoms after initial improvement following treatment initiation.