Question regarding my wife and her health

Has anyone examined her thyroid? The thyroid can produce a myriad of symptoms that would point to everything else but the thyroid itself.
That is my uneducated guess and I am sticking to it

That happened to my mother...thyroid problems can cause all sorts of weird symptoms! (Hers made her get dizzy if she bent over. Also, once, she actually passed out when she...sneezed. Weird.)