* It is due to group A streptococcus infected by a bacteriophage; poisoning by erythrogenic toxin secretion.
Is experienced especially in children 5 to 10 years; exceptional in infants and rare in adults.
Scarlet provides good immunity against streptococcus involved and the toxin.
* The rash installs in less than 48 hours.
First appears on the chest and at the root of the members then extends 1 to 2 days on the whole trunk.
It reaches the ends respecting palms and soles and perioral region.
The skin is rough with a print granita.
It dominates at the flexures without skin healthy range.
* The enanthema is constant and characteristic.
Associated pharyngitis; saburral language that exfoliates from the peripheral to the center to become uniformly red on day 6 (strawberry tongue).
* General signs regress from the sixth day.
The rash disappears with desquamation from the 8th to 30th day.
* The forms are the most frequent rough now but still enanthema characteristic.
* Departure Forms in extra-pharyngeal (skin infection)
* Complications: cervical lymphadenitis, otitis; Early nephritis; scarlatin arthritis (early).
Late post-streptococcal complications.
* Prevention of disease in subjects contact penicillin V or macrolide for 7 days.
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