Table 3:

Reported incidence of visual hallucinations in various conditions

Condition	Incidence of VH
Lewy body dementia	20%–75%31,33,35
Parkinson disease	15%–75%35
PCA/AD	25%49
FTD	10%–14%54
Occipital seizures	≤100%16
Migraine	90% with visual aura17–19, CVH rarer
PRES	Case reports only23,24
RVCS	Case reports only24

Note:—PCA indicates posterior cortical atrophy; AD, Alzheimer disease; FTD, frontotemporal dementia; CVH, complex visual hallucination; PRES, posterior reversible encephalopathy syndrome; RCVS, reversible cerebral vasoconstriction syndrome.