I literally just went to the orthopedics about this. He gave me a cortisone injection, which I think he ****ed up cause I was in more pain after it wore off., so I might not advise that. He told me to get a wrist immobilizer and wear that, also so to stretch that top forearm muscle. Extend your arm, make a fist and push down on your fist like you're curling it but upside down. Hold for 45 seconds, 15 reps 4 sets over the day, also prescribed me some anti inflammatory.