I had a severe case of tennis elbow years ago from fishing, not from casting but from holding a 7' rod in my left hand with a 1 oz. weight and Carolina rig attached to the other end. Big hook sets don't help either. After 2 cortisone shots that didn't help I ended up going through rehab at a Baylor rehab center on I-30 in Mesquite. That was 15 years ago and haven't had any pain since. I highly recommend NOT holding the rod tip high and away from your body, keep your elbow next to your side for support and set the hook with a sideways motion using your upper body instead of just your arm. The ice/heat contrast helps a lot too. Good luck.
I am a Senager. (Senior teenager) I have everything that I wanted as a teenager, only 50 years later. I don’t have to go to school or work. I get an allowance every month. I don’t have a curfew I have a driver’s license and my own car. The people I hang around with are not scared of getting pregnant. And I have a bass boat.
Life is great!