Hope this helps,
I had the Same Pain , from ACTUAL GOLF 3-5 days a week for years...(I'm 46)
Did not go to the Dr.
Friend said get that elbow forearm band that presses on muscle for isolation.
Started last Thanksgiving , quit golfing Completely.
In 2 months it started feeling better, after that I took off band.
I decided to halt Golfing for 6 months since repair was working on its own....
Then I bought a Boat....
Still have not Golfed in over a year...
Arm is 90% healed... No therapy
Rest was the initial heal , there some light work outs on entire body...
Side note: I don't really miss Golf much....and I was an addict...lol
2016 G21 Coastal
2014 X46 GEN2 7.4
2014 X30 GEN2 5.7
2006 VRS200 5.7
2013 X30 GEN2 6.2