I have had hypothyroidism/Hashimoto’s for over 2 decades, and had first symptoms of vertigo( and even seizures) 45 years ago…had never really linked the two together although it is well known carpel tunnel syndrome, while again I had for a while, is a known link. A recent paper by Indian researchers has just been published, unfortunately only based on 5 men, but very interesting link to neck/ shoulders/ vertebrae and compression on nerves there…thus my definite link to early dizziness. Hope I’ve got the right photo of paper details, sorry not direct link.