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Published on: April 11, 2025
Visual hallucinations in consultation-liaison neuropsychiatry
Mark Walterfang1, Ramon Mocellin1, Dennis Velakoulis1
11Melbourne Neuropsychiatry Centre, University of Melbourne, Parkville, Victoria, Australia.
Background:
In consultation-liaison settings, neuropsychiatrists are commonly asked to assess patients with hallucinatory syndromes and to differentiate 'functional' from 'organic' psychotic presentations.
Methods:
The occurrence and management of visual hallucinations (VH) in healthy individuals, lesion states, neurodegenerative disorders, intoxication/withdrawal states and delirium are reviewed.
Results:
The presence of VH has been shown to predict a secondary rather than primary psychotic illness and an understanding of the neurobiology of the visual system - including how and where underlying neurotransmitter systems interact in visual processing and how perturbations can result in VH - allows for appropriate clinical assessment and management.
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