Well, the usual red ring - for me anyway - is not raised so not really a weal but similar to what you see at your waist after wearing jeans with a belt all day. I'd suspect that if you're seeing raised rings you may indeed have a slight allergy.
I'd be pissed off if I lost any of my plastic panties on a road trip...but I have left behind a gray sweatshirt on one trip and a water bottle on another.
Saturday is usually my washday, and so it was yeaterday. They're all washed and dried; II still have to fold and put away. Otherwise it was a lazy day; I wore my plastic panties and dress nearly all day; finished one novel and started another.