A fierce pain in my upper arm and shoulder that runs down to fingers is back after a few months absence. Doing anything which involves holding my arm out is agony. Even letting my arm dangle hurts. Am I better off making a temporary sling from a scarf to rest it or should I keep it moving despite sickening pain can anyone tell me? As most will no I still have no proper diagnosis of RA so can't ask a physio but hoping someone can help.