I have just joined the site following a jump back up in my TSH levels. I have been on Thyroxine for about 18 months with the doses being increased from 50 to 150 over that period. I had got my level down to about 3 and then had some voice issues a scan showed my thyroid as borderline enlarged and a camera check on my vocal cords was clear. The EN&T guy suggested I have another blood test and it had jumped back up to 5.7, which I would guess has something to do with these bouts of extreme tiredness that have been coming over me. I am speaking to my GP tomorrow so I guess I should be booking a blood test for three weeks time and he will up my dose. My T4 level seems to be very stable around 10 or 11. Any advice help would be welcome.