Scarlet fever is strep throat with a rash. Symptoms include sore throat, fever, headache, belly pain, and swollen neck glands. After 1-2 days, a red rash with a sandpaper texture shows up. After 7-14 days, the rash rubs off. Scarlet fever is very contagious, so wash hands often to keep it from spreading. Call your child's doctor if you think your child has it. They'll probably be treated with with antibiotics.