This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
The etiological agent of Roseola infantum includes 
Select and explain. 
A. CMV, B. EBV, C. Parvovirus, D. Human herpes virus 6
D: Human herpes virus 6
Answer: D: Human herpes virus 6 
Explanation: Roseola infantum*A history of 3 days of high-grade fever in an otherwise nontoxic 10-month-old child with a blanchable maculopapular rash on trunk -Roseola.*Mean duration- 6days - so sixth disease/Exanthem subitum.*Nagayama spots-ulcers at the uvulopalatoglossal junction.*DD - Measles, Rubella, Drug allergy.*M/C complication-convulsions / recurrent seizures/temporal lobe epilepsy.*Rx suppoive*Severe cases-Ganciclovir/ Foscarnet.(Refer: Nelson's Textbook of Paediatrics, 19thedition, pg no:1117)