There are several ways to diagnose this disorder. It is important that a health care professional tests the symptoms to detect whether it is Scarlet fever or something else with the same symptoms. The health care provider is focused on examining the tongue, throat, and tonsils. The doctor pays attention to the intensity of the rash. It is necessary to gather a sample of the patient’s cells to come up with an accurate conclusion. Much medical staff call this procedure a throat culture. The goal of laboratory workers is to identify whether A streptococcus bacterium is there in the organism.