A 24-Year-Old Man with Disseminated Tuberculosis and A Corticosteroid-Refractory Paradoxical Reaction to Anti-Tuberculous Treatment.

Introduction: Paradoxical reactions during anti-tuberculosis treatment are immune-mediated reactions that complicate treatment even in immunocompetent patients. Case description: We present the case of a previously healthy 24-year-old man with disseminated tuberculosis, who experienced persistent fever, weight loss, and radiological deterioration despite appropriate treatment. These findings were consistent with a paradoxical reaction to treatment, after extensive work-up excluded treatment failure, co-infections, and systemic inflammatory conditions. However, high-dose corticosteroids failed to achieve improvement. Ultimately, an interleukin-1 receptor antagonist (anakinra) was initiated as a salvage therapy for this corticosteroid-refractory paradoxical reaction, resulting in rapid defervescence, normalization of inflammatory markers, and radiological improvement. Conclusion: This case underscores the diagnostic and therapeutic challenges when managing severe reactions in tuberculosis patients, while highlighting the importance of biologics like anakinra in corticosteroid-refractory paradoxical reactions. LEARNING POINTS: Paradoxical reactions to anti-tuberculosis treatment remain an overlooked cause of non-resolving fever in immunocompetent and immunocompromised patients with tuberculosis and should be considered after ruling out treatment-refractory or complicated infection in persistently febrile patients.Prompt treatment of severe reactions prevents major complications and improves clinical outcomes.Corticosteroid-refractory paradoxical reactions illustrate the potential role of biologics, such as tumour necrosis factor inhibitors and, in our case, interleukin-1 receptor antagonists, in controlling excessive inflammation in tuberculosis.