Question: can xeljanz cause a rash?
Answer: During studies, rash was one of the more common side effects of Xeljanz. In clinical studies, up to 6% of people who took Xeljanz had a rash. Of people taking a placebo (treatment with no active drug), 4% had a rash. Rash may also be a sign of a more serious side effect, such as herpes zoster (shingles).