A case of Brucella spondylitis in a patient with psoriatic arthritis receiving infliximab.

A 69-year-old woman with psoriatic arthritis treated with infliximab presented with low back pain of recent onset and fever. Serological, microbiological and imaging studies revealed Brucella spondylitis at the L5-S1 level. Immunosuppressive therapy was suspended and antibiotic therapy including doxycycline and rifampicin was administered for six months. The patient responded adequately with clinical and laboratory improvement and a considerable remission of spondylitis on repeat magnetic resonance imaging scan. The pathophysiology of tumor necrosis factor (TNF) alpha in Brucellosis and the role of anti-TNFalpha therapy are discussed.