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Previous Topic | Next Topic  scarlet fever vs. Rheumatic Fever<:flag: 




 
Kaplan Qbank USMLE



Author5 Posts
  #1

What are the main differences between the 2 infections. Please can someone tell me. Thanks :!: <:flag:>

  #2

Rheumatic Fever is Non-spurative complication of Scarlet Fever...That is the main difference...

  #3

I think scarlet fever is the direct infection of streptococcus whereas rheumatic fever is the result of immune reaction to the organism and so it occurs about 1 month after infection.
So the scarlet fever is the supporting evidence for the diagnosis of rheumatic fever.

  #4

Both are caused by S pyogenes. Clinical manifestations depend on which exotoxin is expressed. Erythrogenic toxin (superantigen) --> rash/ SF.

Spyogenes skin infections (impetigo, cellulitis, erysepilas) are the ones that --> acute (post-strep) glomerulonephritis.

Spyogenes pharyingitis --> rheumatic fever

(BRS Micro & Immuno, pg41-42)

___________________
Do not worry about your difficulties in mathematics. I can assure you mine are still greater. -- Albert Einstein

  #5

thanks grin







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