Sounds like good advice from Carrigon.
Night sweats were the very first symptom I can remember. I had weird night sweats several times, about a year or so before I noticed any other problems. I have then, later, had them very frequently, especially when I was at my sickest. But until I found this site, I didn't realise they were so characteristic of ME/CFS; learning that they are common for us was one of the things that confirmed to me that my onset dates back a year or two earlier than I would previously have dated it.
I also have observed over the years that my night sweats seem to be a factor in "infecting" bedding and clothing. I can't be clear about it, but it does seem likely that this is what makes clothing become unbearable to the touch - not always, but often (I have to buy through a new set of clothing every month or two).
I have two guesses about the significance of the night sweats (beyond what I've read of the science, which indicates that this is a hashimoto's issue, and a symptom of the dysfunction of the body's regulatory systems). First guess is: this is part of the body's attempt to sweat out toxins it can't get read of via other means - this could include gluten but it could also include anything else you're sensitive to, or which has leaked out of your gut. Second guess is: if it is true that it is sweat that is "infecting" my bedding and clothing, then I have to wonder what exactly it is infecting it with. The toxins? Or could this be a mechanism for the spread of XMRV? I've been pondering this idea that sweat on shared towels etc could be a mechanism for transmission of something, perhaps XMRV, since this would fit rather well with several of my other observations.