Viruses – Roseola

November 12th, 2010

Roseola, also called Exanthem Subitum and Sixth Disease, is a common skin rash that I encounter in both my The Woodlands dermatology and Conroe dermatology clinics.  It is caused by the viruses human herpes virus (HHV) 6 and 7.  Children between 6 months and 3 years old are most often affected with Roseola and initially present with sudden high fever.  Occasionally, children with Roseola also experience convulsions and my have lymphadenopathy (enlarged lymph nodes).  After 4 days of fever, it suddenly resolves and a morbilliform rash appears consisting of rose colored macules on the neck, chest, back, and buttocks.  The rash occasionally occurs on the face and extremities.  A common hallmark in viral induced rashes is a white halo around the red areas comprising the rash, which is usually seen in Roseola.  The mucous membranes are usually not involved.  The rash typically resolves 2 days after it initially appears.  There is no treatment for Roseola as it is a self limiting disease.

Roseola