Overview
Roseola infantum (also known as exanthema subitum, or sixth disease) is the most common, contagious viral rash in children under 3 years of age. Infection results in lifelong immunity. This mild, self-limiting infection resolves rapidly.
Causes
Human herpesvirus 6 (HHV-6) and human herpesvirus 7 (HHV-7) cause roseola.
Signs and Symptoms
Following an incubation period of 1 to 2 weeks, a high fever (102º–105º F) develops. 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.
Physician-developed and -monitored.
Original Date of Publication: 01 Sep 2000
Reviewed by: Stanley J. Swierzewski, III, M.D.
Last Reviewed: 04 Dec 2007
Roseola, Overview, Causes reprinted with permission from dermatologychannel.net
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