I get it too. First time I got it on a WDW trip, I went to a walk in ER, and was told it was concrete dermatitis. I wore slacks for the remainder of the trip to hide my hideous looking legs. It lasted for a couple more weeks before it finally faded away. I was in my early 40's then, and not over weight. The nurse mentioned that although it wasn't common, it occured mostly in women from the Northeastern states. She told me that I could now tell people that I contracted a "rare tropical disease"....
