Hi, I was diagnosed with overactive thyroid last November but no cause for it ever found. Following a grim 8 months on carbimazole I was told by Endo today that all the levels including TSH are in normal range. Why then am I still so symptomatic with hyper symptoms, especially the sweating. Endo seemed to think I should be running a marathon now when in reality I'm struggling to walk to the end of my road !! Anyone experienced this and did the symptoms ever go ?