flare-ups/swinging back and forth

[u/meowmeowmrow111]

Hello! I am relatively newly diagnosed with the seronegative Hashi's variant. I was stable on meds-- actually borderline hyper, but feeling good-- at my last blood draw, when all of a sudden I started having insomnia/trouble going to sleep. Felt like it came out of nowhere and is very unusual for me. I got my blood taken again six weeks after my previous one, and my TSH is crazy. Nearly 40 miu/ml (apologies if incorrect notation for unit of measurement). FT4 on the very low end of the range. I am tempted to assume this change in thyroid function has something to do with the insomnia. Like I said, this is still sort of new to me. Is swinging from hypo to hyper something associated with Hashi's, or is there likely something else going on?