Vascular component: |
0 | Exposed to vibration: no symptoms |
1 Mild | Occasional blanching attacks affecting tips of one or more fingers |
2 Moderate | Occasional attacks distal and middle phalanges of one or more fingers |
3 Severe | Frequent attacks affecting all phalanges of most fingers |
4 Very severe | As in 3 with trophic skin changes (tips) |
Neurological component: |
0 | | Exposed to vibration: no symptoms |
1 | | Intermittent or persistent numbness with or without tingling |
2 | | As in 1 with reduced sensory perception |
3 | | As in 2 with reduced tactile discrimination and manipulative dexterity |