Have you been checked for carpal tunnel syndrome? It can happen in one arm and not the other if you do something repetitive with only that arm.
I would go see a doctor about it. Not to scare you, but women can get heart disease too- it's really the #1 killer of women in the U.S. Pain usually starting in the left arm can be an early sign of a heart attack later on. Or so I've been told.
It might not be that serious of course, but getting it checked out couldn't hurt. I hope all is well.
my friend found out she had a recurring form of multiple sclerosis and the initial symptoms were tingling, numbness and eventually limited movement. it is a rare type, in that it comes and goes. your symptoms could be anything and probably arent MS, but i mention it because it took awhile for her doctors to reach that diagnosis.
I HAVE THE SAME THING HAPPENING TO ME IT STARTS AT MY SHOULDER AND TRAVELS DOWN TO MY FINGERS.IT IS A TINGLING AND NUMBING FEELING AND SOMETIMES IS PAINFUL. ABOUT 5 YEARS AGO I HAD BACK SURGERY TO REMOVE A DISK THAT WAS SWOLLEN AND WAS SUPPOSE TO HAVE THE SURGERY AGAIN BUT DIDNT, MAYBE IT IS IN YOUR SPINE.
I also have started having pain from my shoulder,it feels like right under my underarm is tingling and itching going down my arm and especially my elbow. I have pain all the way down my hand..