Additional symptoms. The most common symptom is the rash and it can last up to a week or even longer in some cases. However, it’s not the only symptom of scarlet fever. Children who develop this illness tend to exhibit symptoms such as a painful sore throat that makes it difficult to swallow, and they develop a high fever. A child’s lymph nodes might be tender to the touch, and they might appear swollen. Some kids develop a raging headache that leaves them listless and unhappy, and other kids vomit. These symptoms can last anywhere from a few days to a week or more if the cause is not treated. If a child’s fever is 102 or higher, parents should call the doctor right away.
