something that is really good for bleaching stains out of white things is to use lemon juice and salt--kinf od rum them into the stain--and then set them out in bright sunshine--don't know if that will help anyone----but I thought i'd throw it out there
Sweat in general can cause discoloration if you do it a lot. I know I can discolor my clothes and sheets (even my mattress cover) so it is a matter of how much. It is also a bear to get the stains out!
Have you come to any conclusions on this sweating? I have the same problem and am on may meds for my joints. I was wondering if that had anything to do with that.
I am not sure, but I know when I had high cortisol, I used to discolor my clothes and sheets.
Usually when you have AI, you are not supposed to sweat - it is very bad for you as it drains salt and can be dangerous. So if she is sweating that much, I hope she is taking salt enough to make up for what she is losing as well as fluids.