Table 2.
Characteristics of visual hallucinations experienced by patients with Parkinson’s disease (PD-VH).
| Visual hallucinations characteristics | PD-VH (n = 16) | |
|---|---|---|
| Phenotype | Complex visual hallucinations | 11 (62.5%) |
| Minor visual hallucinations | 5 (31.3%) | |
| Frequency | Less than once a weeka | 11 (62.5%) |
| More than once a week | 5 (31.3%) | |
| Duration | Less than 1 s | 8 (50.0%) |
| Less than 10 s | 6 (37.5%) | |
| More than 10 s | 2 (12.5%) | |
| Insight | Always preserved | 10 (62.5%) |
| Sometimes preserved | 4 (25.0%) | |
| No insight | 2 (12.5%) | |
| Number of experienced images mean (sd) | 1.44 (0.79) | |
| Distress | No distress | 10 (62.5%) |
| Mild to moderate distress | 6 (37.5%) | |
Participants were asked to reflect on all visual hallucinatory phenomena experienced within the previous month.
Complex visual hallucinations included well-formed imagery (people, animals, etc.), stationary or animate images. Minor hallucinations included passage hallucinations and non-formed images (shadows, etc.). Misperceptions alone were not included as minor hallucinations.
aAll participants experienced hallucinations more frequently than once per month.