Thanks a lot for the response and info, I saw my GP last week and he has referred me to a Physiotherapist, I'm just waiting for the letter to come through the door to get an appointment, the GP seemed to think it may be one of the small muscles around the elbow or a nerve that is irritated but he wasn't much help to be honest. I have been resting it a lot and haven't played at all for 4 days, and before that I was playing at a much reduced level, hopefully this will help. You could be right with a muscle imbalance as when I used to play cricket and bowled a lot I got a muscle imbalance then with my right shoulder and back, you could actually see that my right side was much bigger from the fast bowling. Can't wait to see the Physio I'll let you know what he says, getting very fed up at not being able to play darts, especially as the new season is coming up rapidly. Thanks once again Lee.