Roseola typically isn't serious, but it's contagious. Signs are high fever for 3 to 5 days followed by a rash on the trunk and neck. Roseola is most contagious before the rash appears. Other signs and symptoms may include diarrhea, irritability, swelling of the eyelids and decreased white blood cell count. There's no specific treatment for roseola.
Antibiotics are ineffective.
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