I have this problem too. I have TOS and my Dr told me that surgery is not an option. Most days if I am grocery shopping I have to have some one else with me to push the cart, since the pain is intense.
But I have found something that seems to work for me. I haven't taken any pain meds for over a week now. I found a massager that does deep tissue massage, it looks like a vest and I don't need to hold it with my hands. So far if I am in pain I use the massager for 10 min and I feel so much better. The first time that I used it my pain was off the scale, but by the next morning it was at a 3! Big difference!
Hope you find relief!