I had tendonitis so bad in my elbow I couldn't pick up a mug of coffee. The pain was so bad, I couldn't clasp my hand around anything. I eventually just used my other hand to do everything.
I spent a fortune on acupuncture and physio, only to be told that they can't really "fix" the problem, they can only give temporary relief (temporary being a few hours ...).
This went on for six months. I was ready to cut my freaking arm off ... I couldn't sleep because it was so incredibly sore. This tendonitis really hampered my life. It owned me.
I eventually told a friend of mine and they said "Get ART". So I went to a chiropractor who specialized in Active Release Technique. (A massage therapist who knows ART could also help.) Two treatments later, my tendonitis was gone. Yep. Gone. Zero pain. I honestly couldn't believe it. I had to go back a couple more times because I irritated my tendon working out, but for the most part, I don't even know it's there.
I do get very minor flare ups from time to time when I'm over-using my forearm but it's nothing like what I had before.
Just find somebody who is GOOD at ART (i.e., lots of experience!) to get relief (not some bozo who took the weekend course and thinks he/she is an expert).