Disseminated tuberculosis infection and paradoxical reaction during antimycobacterial treatment related to TNF-alpha blocker agent Infliximab

Tumor necrosis factor (TNF)-alpha inhibitors play an important role in the treatment of immun-mediated diseases such as Crohn's disease. But they also have been related to increased risk for disseminated Mycobacterium tuberculosis infections and paradoxical response to antimycobacterial treatment. Here we report a disseminated tuberculosis case and a paradoxical response to treatment after receiving TNF-inhibitor agent Infliximab for Crohn's disease. The patient had a severe clinical condition before the antimycobacterial treatment and although proper treatment was initiated his radiological findings were worsened one month after initiation of the treatment. All control microbologic tests for secondary infections were negative and this situation was accepted as a paradoxical response to antimycobacterial treatment and treatment was continued with the same regimen. At the end of the second month of the treatment, most of the symptoms disappeared and chest radiograph findings were better than the previous one. In conclusion, TNF-alpha inhibitor therapy increases risk of mycobacterial infections and patients should be examined carefully about tuberculosis before starting this therapy. Also, it is important for physicians to recognize and know how to manage paradoxical response related to TNF-alpha inhibitors during anti-tuberculosis treatment.