I have Multiple Sclerosis, am 44. I have been experiencing a warm to the touch sensation in my right arm from my arm pit to lower fore arm. its more of an annoyance then pain. There is no lumps in my underarm, and just had an gyo exam, and was advised due to my MS everything is more blown out, even PMS symptoms. Thoughts? I do experience a little numbness in my hand, but my MS does that too. This only occurs 2 weeks before my period. Thank you.