7 yr old child with 1 day fever, low grade intermittent, with h/o excessiv sleepiness since 1 day.no jaundice/loose stools/vomittin /headach.no significant drug history.o/E vitals stable,systems normal. no pallor icterus.lab inv sgpt 88, cbc, rbs, electrolyts, urea , creatnine normal.what are the possibilities?
fever with excessive sleepiness