About 3 years ago I had severe arm pain after blood test in my right arm. I saw neurologist who transferred me to rheumatologist and the latter to pysiotherapist. No one really had an answer. After about two years the pain went. Then, about two months ago I had blood taken from my left arm, because I am still traumatised from the experience, I now have the same symptoms in my left arm. I spoke to my GP but I am not taken seriously. I will not see anyone else but only wait till it goes again, hopefully in a couple of years. I that I will not be able to sleep on my left arm for at least a year and when I travel on the busses I can't use my left arm to firmly hold on to keep balance. It is very annoying and frustrating. However, I know from past experience that it will eventually go away. I do regular gentle stretching exersises to support the recovery process.