Scarlet fever
Signs and symptoms

Scarlet fever typically presents with a sudden onset of sore throat, fever, and malaise. Headache, nausea, vomiting and abdominal pain may also be present. Scarlet fever usually follows from a group A streptococcal infection that involves a strep throat such as streptococcal tonsillitis or more usually streptococcal pharyngitis. Often these can present together known as pharyngotonsillitis. The signs and symptoms are therefore those of a strep throat but these are followed by the inclusion of the characteristic widespread rash. The rash usually appears one to two days later but may appear before or up to seven days following feeling ill.

It generally hurts to swallow. However, not all cases present with a fever, the degree of tiredness may vary, the sore throat and tongue changes might be slight or absent, and the rash can be patchy rather than diffuse in some. Cough, hoarseness, runny nose, diarrhea, and conjunctivitis are typically absent in scarlet fever; such symptoms indicate what is more likely a viral infection.
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