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Hmmm, I wonder what the removed comments were!
He's had so many blood tests so I think they've probably checked for most things. He did have a high T4 level at one point but that's gone back to normal as far as I know.
Yeah he does suffer with depression because of his condition/disability but he just seems so super exhausted the last couple of months.
Thanks all for answers. Boxtops, you're spot on with the way he is feeling!
He went to uni and always wanted to work full time but at the moment he can barely work part time. A few months ago he had to ask to go part time and do a job share as the journey was too much (54 miles to get to work) so too far when you're tired. Then the Doc said she didn't want him driving that far as it was too dangerous driving over 100 miles per day as he doesn't sleep much at night so he's exhausted and other symptoms. He feels like such a failure and would do anything to be 'normal' again. He does get SSP but it's sod all, as you know.
The past few months he has been working from home and his work aren't too happy about it.
Thank you all for your answers, if it continues, we'll have to speak to his consultant about it.