Hip bursitis.  Exercise the pain away.
D018771:Arthralgia / Q000628:therapy*; D002062:Bursitis / Q000517:prevention & control / Q000628:therapy*; D005081:Exercise Therapy; D006621:Hip Joint / Q000473:pathology*; D006801:Humans; D007592:Joint Diseases / Q000517:prevention & control / Q000628:therapy