Clinical presentation
- Elementos purpúricos, facilmente impercetíveis em fundo de eritema
- Pode ter enantema petequial e microlesões aftosas (pseudo-Koplik sign)
Histology
- No vasculitis, but extravasation of red blood cells into papillary dermis
- Lymphocytic perivascular infiltrate
Etiologia
Parvovirus B19- Also other virus: measles, rubella, hepatitis B, HIV, HHV6-7
Diagnosis
- PCR in serum and skin biopsy
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