Table 1 Questions the practitioner may ask in seeking the "5 Ds And 3 Ns" principle (though nystagmus is investigated on examination)
| blurred vision? | |
| double vision? | |
| trouble swallowing or speaking? | |
| Have you been experiencing: | dizziness? |
| fainting spells? | |
| nausea? | |
| trouble with walking or balance? | |
| numbness in your hands or feet? |