Hey Dante, bummer. I've been getting bad cramps in my right arm for a while now. Switched to left hand mousing, which helps. And also, as Mike is qualified massage therapist (good to have in your band BTW
), I get a fortnightly massage from him which helps.
There's an Ayurveda Panchakarma treatment called Patra potali (heated cheesecloth bags filled with herbs, lemon slices and oil, rubbed on the area or pounded on the area to free it up). My sister gave me 45 min treatments over 3 days after xmas. The best relief I've has for ages. I can now hold chopsticks again without cramping. Now mine is largely coming from my right hip and shoulder. Anyway, check out your local Ayurveda Panchakarma options, there are licensed Maharishi Transcendental Meditation Ayurveda Panchakarma centers, but there are others as well, the Maharishi refined the treatments and brought them to the west. Depak Chopra used to be his right hand man until he deserted and moved to California to go commercial (he's an Ayurveda doctor). Check it out, It will help
The other thing I use is a thing called Crampease (which would also help), has Rutin, Magnesium, B vitamins and homeopathic copper, it also helps allot (and isn't steroids!)
Fortuitously, playing guitar doesn't aggravate, and isn't hindered by my particular plight (few), but I understand the pain... I like you answer to the doctor, play less ? yeah good luck with that LoL