Neuropsychiatric symptoms are symptoms that caused by organic brain
disorders. Multiple neuropsychiatric symptoms can occur concurrently in the
course of brain related organic disorders. Two main components of
neuropsychiatric symptoms are cognitive impairment and disturbance of
consciousness while other neuropsychiatric symptoms, such as hallucinations,
delusions, mood disorders, anxiety, apathy, behavioural and personality
changes also commonly occur. Some of the mild neuropsychiatric symptoms
could possibly be the earliest manifestations of brain related organic
disorders. Clinicians should carefully evaluate organic factors in the
treatment of psychosis, especially in patients of very young age or older age.
They should have enough knowledge and experience in the integrating
neuroscience, that is, neuropsychiatry. The present report illustrates a case of
organic disorder with neuropsychiatric manifestations. It is about a young
male patient who was diagnosed with anti-NMDA receptor encephalitis and
subsequently developed acute delirium secondary to the illness.