Table 1.
Grade | Description | At rest | Motion |
---|---|---|---|
I | Normal | Symmetry | Normal facial function |
II | Mild dysfunction | Normal symmetry and tone | Forehead: moderate to good function |
Eye: complete closure with minimum effort | |||
Mouth: slight asymmetry | |||
III | Moderate dysfunction | Normal symmetry and tone | Forehead: slight to moderate movement |
Eye: complete closure with minimum effort | |||
Mouth: slightly weak with maximum effort | |||
IV | Moderately severe dysfunction | Normal symmetry and tone | Forehead: none |
Eye: incomplete closure | |||
Mouth: asymmetric with maximum effort | |||
V | Severe dysfunction | Asymmetry | Eye: incomplete closure |
Mouth: slight movement | |||
VI | Total paralysis | Asymmetry | No movement |