Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Exanthem subitum
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
Exanthem subitum: Means a sudden rash. A viral disease of infants and young children with sudden onset of high fever which lasts several days and then suddenly subsides leaving in its wake a fine red rash. The causative agent is herpesvirus type 6 so the disease is known as Sixth Disease. Also called Pseudorubella, Roseola, Roseola infantilis, and Roseola infantum.
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