I'm new here..but hoping someone can advise. I'm currently on 75mg of Levothyroxine and have had no problems since starting on it four years ago. A few days ago while sitting on the sofa I felt pins and needles in my left hand -simultaneously I also began to feel very warm and began sweating. As it was my left hand, i thought i was having a heart-attack..! I felt so hot i had to go outside into the cold. During the day I experienced the same thing but not as intense. Then two days of nothing. Then today tingling in my right leg and frequent, much lighter hot flashes, almost like i experienced when going through the menopause. The stand-in doctor thinks it's carpal tunnel syndrome in my hand..!!? and the hot flash is my body's way of redistributing heat..! I have just had a thyroid blood test and am awaiting results..but wanted to know if anyone else had experienced something similar - hot flashes with the pins and needles/tingling in limbs..?