Discussion
Scarlet fever is similar to the pharyngitis in all respects.
Answer: B
Correct answer: False
Scarlet fever is streptococcal pharyngitis plus the effects of the pyrogenic exotoxin: a diffuse erythematous rash sparing the area around the mouth, a strawberry tongue, and subsequent desquamation. It occurs only when the infecting strain carries the toxin gene and the patient lacks neutralising antibody, which is what the Dick test detects.
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