DESCRIPTION
A viral exanthem is a rash caused by a systemic viral
infection; different viruses produce similar-appearing
rashes.
HISTORY
Season, exposure history, and local and regional
epidemiology assist with diagnosis.
- Winter: respiratory viruses.
- Summer and fall: enteroviruses.
PHYSICAL FINDINGS
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Generalized erythematous macules and papules, and urticarial (non-polio enteroviruses, respiratory viruses) petechial rashes mimic more serious systemic infection such as meningococcemia, periorbital edema (Epstein-Barr virus), keratoconjunctivitis (adenovirus), papular acrodermatitis of childhood (Gianotti—Crosti syndrome)—monomorphic, discrete papules and vesicles coalescing on the face, extremities, buttocks.
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Unilateral laterothoracic exanthem (asymmetric periflexural exanthem) occurs on lateral thorax, near axilla, and can spread to other hemithorax and extremities. Papular purpuric gloves and socks syndrome: petechial erythema on palms and soles (parvovirus B19).
TREATMENT
Supportive: bland emollients, group V and VI topical steroids. |