I have been diagnosed wot Hashimotos Encephalopathy or HE. I may have had it for years with. Neurological and cognitive issues. Then the eye Nystagmus set in. My nuerologist saw the sky high thyroid antibodies and took anlong series or scans and rests determined the diagnossis. It was being treated with a tapered course of 60mg prednosone down to ten. Got my eyesight back but I can barely do a thing without being exhausted. Next is the ivig treatments. After.so may years of living with ajar I am so grateful and a little scared of the treatments..