Roseola

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Roseola facts

  • Roseola is a mild illness caused by a virus infection most commonly involving, young children.
  • A sudden high fever that lasts for three to five days is an early feature of roseola. Mild nasal congestion and loose stools may accompany the fever.
  • When the fever disappears, a rash appears, which may last one to two days. The rash is not contagious.
  • Roseola usually resolves without any treatment.

What is roseola?

Roseola is a temporary illness caused by one of two viruses. Characteristically, roseola has a sudden onset and relatively short duration. Roseola is most common in children 6 to 24 months of age, with the average age around 9 months. Less frequently, older children, teens, and (rarely) adults may be infected.

Picture of the roseola rash
Picture of the roseola rash; SOURCE: "Fitzpatrick's Dermatology in General Medicine." Klaus Wolff, Lowell A. Goldsmith, Stephen I. Katz, Barbara A. Gilchrest, Amy S. Paller, David J. Leffell. Seventh Edition. Copyright 2008, 2005, 2001, 1997, 1993 by The McGraw-Hill Companies. All rights reserved.

What virus causes roseola?

Roseola is primarily caused by a virus called human herpesvirus 6 (HHV-6) and less commonly by human herpesvirus 7 (HHV-7).

Medically Reviewed by a Doctor on 1/15/2014

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What Are the Symptoms of a Febrile Seizure?

During a febrile seizure, a child often loses consciousness and shakes, moving limbs on both sides of the body. Less commonly, the child becomes rigid or has twitches in only a portion of the body, such as an arm or a leg, or on the right or the left side only. Most febrile seizures last a minute or two, although some can be as brief as a few seconds while others last for more than 15 minutes.