Erythema Nodosum And Reactive Arthritis Accompanying Tuberculosis: A Case Report

ABSTRACT

Erythema nodosum (EN) is the most common panniculitis, appearing as crops of erythematous nodules located symmetrically on the anterior aspect of lower extremities. It is precipitated by several infectious and non-infectious causes with primary tuberculosis (TB) being its most common cause in developing countries. Reactive arthritis associated with TB is known as “Poncet’s disease.” It is an aseptic polyarthritis, developing in the presence of active TB elsewhere. We are presenting an interesting case of 12-year-old female child with EN and reactive arthritis. She presented with fever and large joints polyarthritis for 1.5 months and lesions suggestive of EN with anorexia and weight loss with a positive family history of pulmonary TB in two other siblings. On the basis of clinical findings, raised erythrocyte sedimentation rate, C-reactive protein, and positive Mantoux, the child was diagnosed to have TB with EN and reactive arthritis. Child markedly improved with antitubercular treatment