It may take between five to 15 days for a child to develop symptoms of roseola after being exposed to the disease. A child is probably most contagious during the period of high fever, before the rash occurs, making it more likely to spread among children.
Each child may experience symptoms differently, but, in general, the most common signs include:
- High fever that starts abruptly and may last three to four days
- Irritability
- Swelling of the eyes
- Rash
As the fever decreases, a pink rash, with either flat or raised lesions, starts to appear on the trunk and then spreads to the face, arms, and legs.