False regarding erythema infectiosum is -
Ans. is 'a' i.e., Caused by HHV6 o Erythema infectiosum is caused by parvoviurs.Parvoviruso Non-enveloped DNA (ss DNA) viruses,o Only DNA virus which has single stranded DNA.o Smallest viruso Has smallest genomeo Only one medically important human parvovirus - Parvovirus B19o Transmission is by respiratory route and through blood,o Infection is commonly acquired in childhood (5-10 yrs).o Most of the infections are asymptomatic.o Most common presentation is respiratory infection with an erythematous maculopapular rash and arthralgia - Erythema infectiosum or Fifth disease.o Starts with prominant erythema of cheeks - slapped cheek disease.o Parvovirus B-19 induces aplastic crisis in children with chronic hemolytic anemias, as in sickle cell disease.o Parvovirus B-19 infection during second or third trimester of pregnancy may result in nonimmune fetal hydrops.
Virology
Caused by HHV6
Marked erythema of the cheeks or slapped cheek appearance often with relative circum-oral pallor
Infection during pregnancy can result in hydrops fetalis due to fetal anemia
Arthritis is a complication
Caused by HHV6