I wonder if anyone with hyper can offer help or advice? I am trying to come off carbimazole after almost 2 years to see if I'm in remission but every time I come off or even cut down, I get symptoms of agitation, faster heart rate, odd sensations in my head. Is this an immediate return of hyper or is it common to have a resurgence of these symptoms prior to a resettling? I don't know whether I have Graves' disease or hyperthyroidism as was never tested for antibodies. Thank you for any light you might be able to shed on this.