Neuroinflammation Non-infectious encephalitis 2026-06-16T20:02:01Z PMID:32670291 A disorder of the brain not caused by an infectious agent, characterised by inflammation of the brain parenchyma. It may present with an altered level of consciousness, focal or multifocal neurologic deficits, and seizures; unlike infectious encephalitis, fever is often absent, and autoimmune forms frequently present subacutely with cognitive, psychiatric, or behavioural changes.