I have had an underactive thyroid for around 8 years.
I saw an endocronologist in early 2016 who upped my dose of Levothyroxine to 75mcg from 50. I have been feeling so much better, less tired, not getting colds all the time, sleeping well etc.
However, both this winter and last winter I have had a series of symptoms which last year I'd originally put down to being on too low dose.
Feeling thirsty and drinking a lot more water but still not feeling I'm hydrated
Waking up in the night and needing the toilet (but still being fairly dehyrdrated)
Tingling tongue and dry mouth
Sometimes feeling pins and needles in my hand during the night
Night sweats (although I generally feel the cold during the day)
Fitful and lighter sleep
Feeling like my eyes are pushing against my eyelids (which I assume could be the start of bulging eye symptoms)?
Could it be that my dose requirements change between the seasons or something else? I have to take extra vit D and iron but didn't seem to have any other vit deficiencies.