For some reason lately I've been getting weird red bumps on my behind. Some days they hurt and look like pimples that have come to a head but most times they are just red dots. Does anyone know what this is and how to take care of it. I've never had acne problems or anything like that. Could it be the friction from tight pants on hot sweaty days?(its been up in the 30's here for around the last two weeks and high 20's before that) because I don't think I own any loose clothing at all