Elated Critterkids asked about this. My sister has suffered from same for about 40 years. About all I can tell is, Hashimoto was the name of the doctor who discovered that some Hypo-active thyroids do not follow the same basic trail of symptoms that have been associated with typical Hypo-actives. She's been on some form of Synthroid for about 40 years. She's been accumulating a number of symptoms over the years, to this point most have been benign and more annoyances; like, she does't sweat like a normal person does, even in the heat of summer, at noon, mowing grass, dressed in black pants and black shirt.
I'd really like to get her going on some Iodine
protocol, but I've very cautious about further disrupting what seems to be an already thoroughly disrupted thyroid problem.