Am reposting this with a more suitable title as has been suggested - hope that's OK.
I've been having a bunch of medical issues for the past 10 months since having a pretty bad bout of sciatica. Since then, I've been dealing with widespread twitching (diagnosed by a neuro after an EMG as benign fasciculations), general anxiety (am starting CBT shortly) and just feeling really run-down (exhausted and weak). My leg muscles have been frequently tight too, and perhaps because of this, my knees often feel numb, sore or "heavy".
On my thyroid issues, I saw a GP on 21 May regarding the twitching and he ordered a bunch of blood tests which came back with these results among others:
TSH: 0.445 (range 0.65-3.7)
Free T4: 16.2 (8.8-14.4)
B12 serum: 388 (145-637)
Calcium serum: 2.47 (2.09-2.46)
Potassium serum: 4.1 (3.6-5.0)
I only got the results a month later, and the GP (a different one) noticed the slightly high T4 levels and ordered another blood test. The results of those (taken 18 June) were:
Free T4: 14.6
TSH Receptor Antibodies: 0.5 (range 0.0-1.5 IU/L). Specimen is haemolysed.
Based on these results, a third GP started me on 5mg Carbimazole per day which I've been taking for about 10 days, but since then, I've felt as tired/foggy with difficulty falling/staying asleep, if not more so. And I don't know if it's coincidence, but I've started feeling a dumb ache/numbness in my left thumb, more tremors in my fingers (especially the left thumb), some general achiness, weakness and pins and needles in my body since I started the Carbimazole. And I've been feeling chills and especially cold in the office today.
What bewilders me is the extent to which my TSH and T4 are out of range - so much less than what I read here and on other forums (in fact my second test results seem almost normal based on the ranges?) Should I really be on carbi or might taking it for just 10 days already have pushed me into the hypo zone (some of my more recent symptoms seem to be the ones more commonly experienced with hypo?) I'm thinking of stopping the Carbi for a few days and monitoring if some of the new symptoms subside, and going back to the GP in the next few days to see what he thinks and maybe get referred to an endo (as Flowers007 has suggested, I'll also ask to be tested for antibodies, B12, Ferritin and Folate).
Alternatively, might my symptoms might be an adverse reaction to Carbi (if so, might they get better over time?) Or are they more likely to be symptoms of high T4 that will take time to resolve as I continue on Carbi (I've read that effects from ATDs only show up after a few weeks)?