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Skin infections

Exanthems case challenge 5

This child has a had a rash for several weeks.

What is the most likely diagnosis? * Fifth disease * Measles * Chickenpox *! Pityriasis rosea Explanation: The first plaque, the herald patch, is followed a few days later by numerous similar smaller scaly plaques mainly distributed on trunk What virus has been associated with this disease? * Parvovirus B19 * Morbilli * Herpes zoster *! Herpes virus type 7 Explanation: Herpes virus 7 has been detected in at least some cases of pityriasis rosea. Herpes virus 6 has also been implicated.