The rash usually appears a few days after the sore throat. It looks like tiny raised pink dots with a rough feeling like sandpaper. You may also have headache, body aches, and a fever. Most often, antibiotics are used to treat the infection. Oct 12, - Scarlet fever can cause a distinctive rash among other symptoms. Scarlet fever can develop from strep throat. Scarlet fever can resolve on its own, but it is important to finish any course of antibiotics prescribed by a doctor.Overview · Symptoms · Causes.