Which one of the following statements is not correct regarding Fifth disease?
1.It is caused by parvovirus B19
2.Patient has slapped cheek appearance
3.Arthritis is the most common complication
4.Incubation period varies form 2-4 days
sol:
The incubation period for erythema infectiosum (Fifth disease) ranges from 4 to 28 days (average, 16-17 days).
Rest of the three statements are correct.
Important points
a. The most common manifestation of parvovirus B19 is erythema infectiosum.
b. It was the fifth in a classification scheme of childhood exanthems.
c. In the initial stage erythematous facial flushing, often described as a “slapped-cheek” appearance is common,
4. Arthritis and arthralgia occur as a complication of fifth disease or as the only clinical manifestation of infection.
d. Parvovirus also causes aplastic crisis and thrombocytopenia.