Abstract
Failure of response to therapy in childhood tuberculosis may be due to resistance, paradoxical response or immunodeficiency. Interferon-γ (IFNγ) plays a major role during host defense against Mycobacterium tuberculosis (Mtb). An 8-y-old boy presented with fever, hepatosplenomegaly and parotid abscess. He had been earlier treated for BCG adenitis in infancy and at 5y for TB osteomyelitis of iliac bone and recovered. Investigations confirmed disseminated Mycobacterium Avium Intracellulare infection. He was investigated for immunodeficiency because of recurrent mycobacterial disease and a partial defect of γ-interferon receptor was identified. He required a 2y course of therapy with a 7 drug regimen and recovered. The authors report this case because of its rarity and to highlight the need to consider γ-interferon receptor defect in the presence of recurrent tuberculosis (TB) and also review the options for therapy.
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