Recurrence of Drug-Induced Lupus Secondary to Vedolizumab Use in a Patient With Crohn's Disease.

Drug-induced lupus is an autoimmune phenomenon characterized by the development of systemic lupus erythematosus-like clinical features after drug exposure. The entity is a clinical diagnosis. Evaluation consists of recognizing systemic lupus erythematosus-like features, identifying an appropriate causative agent, observing elevations of characteristic autoantibodies, and obtaining positive response with drug discontinuation. Vedolizumab is an anti-α4ß7 antibody used in the treatment of ulcerative colitis and Crohn's disease. We report a novel case of drug-induced lupus recurrence secondary to vedolizumab use in a patient with Crohn's disease, emphasizing diagnostic evaluation, and provide a brief review of the published literature.