Exanthem 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, whose manifestations are usually limited to a transient rash ("exanthem") that occurs following a fever of about three day's duration.
It is frequently called roseola, although ...
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Exanthem 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, whose manifestations are usually limited to a transient rash ("exanthem") that occurs following a fever of about three day's duration.
It is frequently called roseola, although this term could be applied to any rose-colored rash.
Until recently, its origin was unknown, but it is now known to be caused by two human herpesviruses, HHV-6 (Human Herpesvirus Six) and HHV-7, which are sometimes referred to collectively as Roseolovirus. Current research indicates that most babies infected with the HHV-6 virus inherited the virus on a chromosome.
Typically the disease affects a child between six months and three years of age, and begins with a sudden high fever (39–40 °C). This can cause, in rare cases, febrile convulsions ...
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