You definitely don't want to do anything to aggravate that condition. You should probably lay off the fast picking stuff for a while and let your elbow really rest. You may want to give some thought to completely immobilizing it for a few weeks to give it a total rest. If it doesn't go away, you should go and see a board certified orthopedic surgeon who specializes in hand / upper extremity conditions. Make sure you do your homework on the doctor though because most run -of-the-mill orthopods like to cut first and ask questions later, if you know what I mean. It may be something that you can clear up with just rest and that's your best bet. If not, you may wind up having to get a cortisone injection or something like that. I continued to play when I was having a problem with an irritated nerve in my thumb. I wound up making the condition worse by not resting it and it has never healed 100 % as a result.