Table 1.
Demographic information and symptom prevalence.
| VSS patients ( n = 125) | ||
|---|---|---|
| Number | Percentage | |
| Age (mean, SD) | 31.3, 10.4 | – |
| Female (male) | 63 (62) | 50.4% (49.6%) |
| Lifelong VSS | 45 | 36% |
| Later onset VSS: | 80 | 64% |
| Age of onset (mean, SD) | 22.4, 9.8 | – |
| VSS duration (mean, SD) | 9.7, 9.9 | – |
| VSS intensity (mean, SD) | 3.7, 1.3 | – |
| VSS disruptiveness (mean, SD) | 3.6, 1.6 | – |
| VSS impact on quality of life (mean, SD) | 3.7, 1.7 | – |
| Migraine | 61 | 48.8% |
| Family history of migraine | 66 | 52.8% |
| Relative with VSS | 5 | 4% |
| Visual symptoms | ||
| Palinopsia: afterimages | 108 | 86.4% |
| Palinopsia: trailing | 66 | 52.8% |
| Nyctalopia | 88 | 70.4% |
| Photophobia | 58 | 46.4% |
| Floaters | 113 | 90.4% |
| Blue field entoptic phenomena | 91 | 72.8% |
| Halos | 83 | 66.4% |
| Number of visual symptoms (mean, SD) | 5.4, 1.8 | – |
| Non-visual sensory symptoms | ||
| Tinnitus | 97 | 77.6% |
| Tremor | 43 | 34.4% |
| Paraesthesia | 59 | 47.2% |
| Dizziness | 44 | 35.2% |
| Other symptoms | ||
| Neck pain | 63 | 50.4% |
| Irritability | 70 | 56% |
| Concentration problems | 99 | 79.2% |
| Depersonalisation | 45 | 44.1% |
| Derealization | 31 | 30.4% |
| Previous or current anxiety disorder | 56 | 44.8% |
| Previous or current depressive disorder | 48 | 38.4% |