I have recently been diagnosed as hyperthyoidism, even though most of my symptoms indicated to hypothyoidism, so much so doctor did blood test twice. I'd put 3st on in weight, felt cold all the time, couldn't sleep (still can't), really tired, etc. (Been like that for 3 years!) Apparently it's unlucky with the weight gain. Has anyone else, had reverse of symptoms. Now I get hot flushes all the time - at least 10 times a day and rising, (I am 52 but have never had a single hot flush until 4 weeks into carbimazole) still can't sleep, some days feel utterly exhausted. Only symptom I can associate with was pounding heart (which wasn't mentioned by doctor) which is very slowly abating. Any advice would be appreciated. Does this also mean that I will continue to put the weight on.