Roseola Infantum. Roseola is a generally mild infection that usually affects children by age 2. Roseola is a common childhood disease.

The cause is primary infection with human herpesvirus 6 hhv 6. Two common strains of the herpes virus cause roseola. Roseola infantum sixth disease roseola is a viral illness mostly seen in children aged six months to two years.
Most infections occur before the age of three.
Roseola roe zee oh lah is a viral illness that most commonly affects young kids between 6 months and 2 years old. It s also known as sixth disease exanthem subitum and roseola infantum. Roseola is a common childhood disease. When symptoms do appear the first thing you ll notice is a sudden high fever over 103 f that lasts.