HI, i have been taking 20 mg twice a day of carbimazole for treating my over active thyroid, for a week now, at first my arms hurt have got weaker and weaker, on saturday i got a crick in my neck and i thought that i has just slept awkwardly, but now my neck is so stiff and hurts so much, mostly at the back and up into my head, it feels like the pain it now moving round to the front of my neck as well, i have taken paracetamol with no relief. I am at my wits end, will probably go to the GP tomorrow if i cannot get any relief from this neck pain. I find it hard to turn my neck as well. is this the condition or the carbimazole... I would be grateful for any advice