Granulomatous myositis associated with brucellosis: a case report and literature review.

Brucellosis, a multisystem infectious disorder, continues to be a serious public health problem in some parts of the world. Neurobrucellosis constitutes about 4% of all brucellosis cases. Brucellosis-associated myositis is extremely rare, and there is only 1 reported case in the English literature. We report a 16-year-old boy with subacute, fluctuating, progressive muscle pain, with tenderness, swelling, and diffuse, asymmetric weakness. He also had significantly elevated serum Brucella titers and a muscle biopsy showed inflammatory granulomatous myositis. We review the literature on myositis associated with brucellosis.