viral exanthem
Pronunciation: VY-ral EK-san-them
Generalized skin rash associated with viral infections, commonly seen in pediatric patients during various viral illnesses.
Full Definition
Viral exanthem refers to widespread skin eruptions that occur as a manifestation of systemic viral infections. These rashes are extremely common in pediatric practice and can present with various morphologies including maculopapular, vesicular, petechial, or urticarial patterns. Common causative viruses include adenovirus, enterovirus, Epstein-Barr virus, and human herpesvirus 6. The rash typically appears during the acute phase of illness and resolves spontaneously as the viral infection clears. While most viral exanthems are benign, careful evaluation is necessary to distinguish them from bacterial infections, drug reactions, or other serious conditions requiring specific treatment.
Usage
Usage note: Distinguish from enanthem (mucosal rash); exanthem specifically refers to skin manifestations.
In Context
- "The patient presented with fever and a generalized maculopapular viral exanthem." — Emergency department note
- "Given the clinical presentation, this appears to be a nonspecific viral exanthem rather than a drug reaction." — Dermatology consultation