Why a.m. i suddenly allergic to the sun

Roseola infantum (exanthema subitum)Trunk, spreads peripherallyMacular to maculopapularHigh fever, usually greater than 102°F (39°C), precedes the rash; child is otherwise well-appearingNoCan be confused with measles; measles rash begins on the face, and the child is usually ill-appearing1 to 2 daysPityriasis roseaTrunk, bilateral and symmetric, Christmas tree distributionHerald patch on the trunk may present first, followed by smaller similar lesions; oval-shaped, rose-colored patches with slight scaleNoOccurs in up to one-half of patientsOften confused with tinea corporis; pityriasis rosea is typically widespread, whereas tinea corporis usually causes a single lesion2 to 12 weeksScarlet feverUpper trunk, spreads throughout body, spares palms and solesErythematous, blanching, fine macules, resembling a sunburn; sandpaper-like papulesOccurs 1 to 2 days before rash developsUsually noPetechiae on palate; white strawberry tongue; test positive for streptococcal infectionSeveral weeksImpetigoAnywhere; face and extremities are most com

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