Erythema nodosum after golimumab treatment in ankylosing spondylitis patients: a case report and literature review.

Introduction: Erythema nodosum (EN) is a self-limited septal panniculitis that presents with fever, arthralgia, and arthritis. Tumor necrosis factor alpha (TNF-α) inhibitor such as golimumab has been found to treat EN in inflammatory bowel diseases (IBD). We herein report the paradoxical occurrence of EN following golimumab for ankylosing spondylitis.