Encephalitis, Viral

**Definition:** Inflammation of brain parenchymal tissue as a result of viral infection. Encephalitis may occur as primary or secondary manifestation of TOGAVIRIDAE INFECTIONS; HERPESVIRIDAE INFECTIONS; ADENOVIRIDAE INFECTIONS; FLAVIVIRIDAE INFECTIONS; BUNYAVIRIDAE INFECTIONS; PICORNAVIRIDAE INFECTIONS; PARAMYXOVIRIDAE INFECTIONS; ORTHOMYXOVIRIDAE INFECTIONS; RETROVIRIDAE INFECTIONS; and ARENAVIRIDAE INFECTIONS.

**Tree numbers:** - C01.207.245.340 - C01.207.399.750 - C01.925.182.525 - C10.228.140.430.520.750 - C10.228.228.245.340 - C10.228.228.399.750 - C10.586.250.520.750

**Synonyms:** - Viral Encephalitis - Encephalomyelitis, Infectious, Viral - Infectious Encephalomyelitis, Viral