What are the physical exam findings of scarlet fever, and how does the rash develop?

Updated: Sep 07, 2018
  • Author: Zartash Zafar Khan, MD, FACP; Chief Editor: Pranatharthi Haran Chandrasekar, MBBS, MD  more...
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Answer

Scarlet fever, characterized by diffuse erythematous eruption, fever, sore throat, and a bright red tongue, can accompany pharyngitis in patients who have had prior exposure to the organism. The rash of scarlet fever requires the presence of pyrogenic exotoxin and delayed type skin reactivity to streptococcal toxins.


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