For the third time running, in the last two years, I've developed a rather uncomfortable rash from a minor to moderate sunburn. I used to never get rashes, I'd burn, and that'd be the end of it. I don't know if there's a correlation here, but I got mono when I was about 15, and it was pretty bad! All the normal symptoms and all that jazz, but I had the most excruciating rash ever. Over nearly my entire body; I'm talking everywhere, even in my mouth!