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The rash of scarlet fever, which is what differentiates this disease from an isolated group A strep pharyngitis (or strep throat), is caused by specific strains of group A streptococcus that produce a streptococcal pyrogenic exotoxin, [21] which is mainly responsible for the skin manifestation of the infection. [25]
The rash often appears on the face near the hairline, then spreads down to the feet. ... occurs from the Group A streptococcus bacteria of a strep throat infection, per the CDC. The bacteria ...
Infections typically begin in the throat or skin. The most striking sign is a strawberry-like rash. Examples of mild S. pyogenes infections include pharyngitis (strep throat) and localized skin infection . Erysipelas and cellulitis are characterized by multiplication and lateral spread of S. pyogenes in deep layers of the skin.
Post-streptococcal glomerulonephritis (PSGN) is an uncommon complication of either a strep throat or a streptococcal skin infection. It is classified as a type III hypersensitivity reaction. Symptoms of PSGN develop within 10 days following a strep throat or 3 weeks following a GAS skin infection. PSGN involves inflammation of the kidney.
Scarlet fever – characterised by a pink-red rash which feels like sandpaper. Middle ear infection, associated with earache and a high temperature. Invasive strep A infections
Invasive strep infections caused by Group A bacteria are on the rise across the globe. Learn what invasive Group A strep is and why rates are so high this year. ... Rash on your neck, armpits, or ...
A rapid strep test (also called rapid antigen detection testing or RADT) may also be used. While the rapid strep test is quicker, it has a lower sensitivity (70%) and statistically equal specificity (98%) as a throat culture. [13] In areas of the world where rheumatic fever is uncommon, a negative rapid strep test is sufficient to rule out the ...
Infections cause by Strep A include the skin infection impetigo, scarlet fever and strep throat.
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