I ' ll inv tell me psn <| sep |> Can you send me what you did ? <| sep |> You beat me to it . <| sep |> Sounds a lot like either tennis or golf elbow . Read c l i m b e r selbowmedialepicondylitis for some more diagnosis and treatment options . It is almost certainly cause by poor technique bouldering and relying too much on your pulling strength rather than pushing with your feet . Basically the biceps or forearm muscles have exerted more force on to their tendons in the elbow than the tendons are trained to take at the moment . There are loads of exercises out there for rehab of this and most climbers suffer from it at some point . I found reverse wrist curls and eccentric rotations solved it for me . IMPORTANT I now do these exercises 3 x a week as prehab and it has not flared up in over a year .