roseola infantum

roseola in·fan·tum

noun \-in-ˈfant-əm\

Definition of ROSEOLA INFANTUM

: a mild virus disease of infants and children that is characterized by fever lasting three days followed by an eruption of rose-colored spots and is caused by a herpesvirus (species Human herpesvirus 6 of the genus Roseolovirus)—called also exanthema subitum, exanthem subitum