I've recently made the decision to start going gluten-free after realizing that I am most likely very gluten sensitive and that my fibromyalgia could be a possible misdiagnosis.
Anyway, about three years ago, inexplicably, I started to get a rash under my armpits. At first I thought it was ringworm - it certainly looked like it (but it was just how it was positioned). It was terribly itchy and red and as I scratched it I would make tiny cuts in the irritiated skin - leading to a cycle of more irritated skin and itchiness, etc.
I went to the dermatologist and she said it was just contact dermatitis, and to just switch my deodorant to a fragrance-free one, as well as soap, and it should heal up. It kind of did, to the point where it definitely isn't as red or as itchy as it used to be - my armpits just look like normal armpits.
But whenever I put on deodorant (I try to use Tom's Natural Fragrance-Free) my skin will still be irritated and itchy, but it won't get red. Or if I shave my armpits, even if I use a boatload of hot water and fragrance-free soap and a nice razor.
As a result, I try to not use deodorant unless I'm leaving the house, and I don't shave my armpits everytime I am in the shower (thank god for fair hair).
But could this random irritation that has come on be a cause of gluten sensitivity? I know it can cause rashes, so I assume it could cause random skin irritations like this.