the thyroid kind...all I can say is from my experience. Fixing is usually easy...if we've other complications..it can get squirrelly. Be sure your docs get the full general blood tests plus a 'chem 25-27' panel with the thyroid TSH [2 #'s I cant remember now] to boot. This all is fairly standard-to be taken via blood every 3-6-mos or a year...depending on other problems. Be sure YOU get copies! then look it all up...you will be confused, at first, but if you use www.lizajane.org 's charts, it may help you map out where you are in terms of what you have, and where you want to be w/some blood's #'s
I can speak from experience in that thyroid #'s change, and adjustment for my 'hypo-t' have made a world of difference. Hope this helps! - j