Infection results in lifelong immunity. This mild, self-limiting infection resolves rapidly.
Seizures sometimes occur due to the high fever.
The child usually does not appear very ill. On the third or fourth day, the fever lowers suddenly and the rash develops. It is not itchy and appears as small pink bumps. Typically, it begins on the trunk and may spread to the neck, arms, and legs. The rash resolves in a day or two, with fine scaling over the areas.