I HAVE AN ODD PAIN OR ACTUALLY AN ACHE IN MY RIGHT ARM.. iT WAS FIRST IN MY MID LOWER ARMTO MID UPPER ARM. THE KIND OF ACHE THAT MAKES YOU WANT TO SHRINK AWAY FROM IT. THE PAIN MOVED TO UPPER ARM TO SHOULDER AFTER ABOUT 1/2 HOUR, SHOULDER TO NECK ABOVE THE CLAVICAL IN ANOTHER 1/2 HOUR OR SO. NOW FOR THE PAST SEVERAL HOURS IT SEEMS TO BE CONCENTRATED IN THE ABOVE THE CLAVICAL . THE PAIN IS ON LHE OUTSIDE OF THE ARM NOT THE UNDER SIDE. IT IS MORE OF AN ACHE THAN PAIN. i WONDER WHAT COULD CAUSE THIS. OF COURSE I AM CONCERNED THAT IT IS HEART RELATED. I AM FEMALE, 72 YEARS OLD, RETIRED RN. THIS SENSATION HAS OCCURRED IN MY LEFT ARM ON OCCASION. cOULD IT BE SLEEP RELATED?tHANK YOU FOR CONSIDEERING MY QUESTION.