Simple visual hallucinations include images of unformed light, geometric shapes or designs. Complex visual hallucinations are formed images of people, animals, or scenes.m

●Etiologies of visual hallucinations include retinal disease, migraine, vision loss, neurodegenerative disease, alcohol and drug use, psychiatric illness, and toxic-metabolic encephalopathy.

●Clinical features that help distinguish among etiologies are simple versus complex content, monocular versus binocular involvement, insight, and associated symptoms

One must see a doctor to evaluate and isolate any of the bleh reasons as a cause:

Retinal pathology

Vision loss, release hallucinations



Dementia with Lewy bodies, Parkinson disease

Alcohol withdrawal

Peduncular hallucinosis


Psychiatric illness

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