Every time I shower/bathe, when I get out and start to dry myself off, I notice little red splotches on my skin. Most of them appear on my back. They can be a little itchy sometimes and if I scratch them I'll sometimes notice little bumps appearing there as well.
This same sort of thing happens in pools/hot tubs.
I'm not allergic to anything that I know of, so I'm not sure if this is an allergic reaction to something in the water, but I doubt it because I've never had any problems from washing my face with the same water. My sister does have extremely sensitive skin, though. Could this be something related to that?