i wonder if this could be your thyroid. i know tingling in extremities is a symptom. if you think it might be, then be sure to go to a good doc who knows how to test for a low thyroid. since i've been on thyroid med i get really hot and sweaty a lot. really, you need to go to a doc to get checked out for whatever this could be. you might also be anemic but really i'm no doc and these are all just guesses. please don't put off going to a doctor as they can run a blood panel and figure it out.