Exanthema Subitum

High Quality Content by WIKIPEDIA articles! Exanthema subitum (meaning sudden rash), also referred to as roseola infantum (or rose rash of infants), sixth disease (as the sixth rash-causing childhood disease) and (confusingly) baby measles, or three-day fever, is a disease of children, generally under two years old, although it has been known to occur in eighteen year olds, whose manifestations are usually limited to a transient rash (exanthem) that occurs following a fever of about three day's duration.