Yes, it does appear that Dupixent can cause joint pain although this is not listed in the product information as a side effect. However, several reports of painful joints, tendinitis, and arthritic-like pain associated with Dupixent use have appeared recently in the literature including a 55-year-old woman with multiple joint and thumb pain, a 38-year-old with severe pain and stiffness in one ankle that progressed to her knees, hips and elbows within days of her first dose, and a 40-year-old with generalized joint pain and morning stiffness.