Nivolumab Causing a Polymyalgia Rheumatica in a Patient With a Squamous Non–Small Cell Lung Cancer

The anti-programmed cell-death-1 antibody, nivolumab, has been recently approved for the treatment of advanced non–small cell lung cancer. Although, today, immune-related adverse effects such as dermatologic, digestive, hepatic, and endocrine toxicities are well-known with immune checkpoint inhibitors, rheumatic diseases are less well described. Herein, we report the case of a patient without a history of arthritis who developed polymyalgia...