Definition

Noun: * A severe viral infection of the brain: Herpes encephalitis is a serious medical condition involving inflammation of the brain (encephalitis). It is most commonly caused by the herpes simplex virus type 1 (HSV-1). The infection typically has a predilection for the temporal and frontal lobes of the brain, which can affect memory, behavior, language, and personality.

Usage

• Herpes encephalitis is a neurological emergency requiring immediate hospitalization and antiviral treatment.
• The diagnosis of herpes encephalitis is often confirmed through a polymerase chain reaction (PCR) test on cerebrospinal fluid.
• Survivors of herpes encephalitis may experience long-term neurological complications.

Advanced Usage

• The term is often used in medical literature and clinical discussions to specify the viral etiology of the encephalitis, distinguishing it from other causes like bacterial infections or autoimmune conditions.
• It may be referred to more formally as .

Variants and Related Words

• Herpes simplex encephalitis (HSE): The full medical term, often used interchangeably.
• Acute encephalitis: A broader category of sudden-onset brain inflammation, of which herpes encephalitis is a specific type.
• Encephalitis: The general term for inflammation of the brain.
• Meningoencephalitis: Inflammation of both the brain and the meninges (the membranes covering the brain).

Synonyms

• Herpes simplex encephalitis
• HSE
• Acute viral encephalitis (when specifying the herpes simplex virus as the cause)

Notes on Meaning

This term refers specifically to a disease state. It is not used in a general or figurative sense. The definition is precise and medical.

Noun

1. common form of acute encephalitis caused by herpes simplex 1; usually affects the temporal and frontal lobes