question: My 30 month old son developed a red rash on his right cheek today. It spreads from his nose to his ear. He woke up from his nap with it and it hasn t yet gone away after about 6 hours now. It s hot to the touch but flat (no bumps). He doesn t seem to notice at all. He was playing outside in the sun before his nap this morning as well. No fever. What is it? Should I take him in?