Table 3. House-Brackmann Scale

Grade	Description	Characteristics
I	Normal	Normal facial function all areas
II	Mild dysfunction	Gross	Slight weakness is noted on close inspecion may have a slight synkinesis
		At rest normal symmetry and tone
		Motion	Forehead : Moderate to good function
			Eye : Complete closure with minimal effect
			Mouth : Slight asymmetry
III	Moderate dysfunction	Gross	Obvious but not disfiguring difference between both sides, noticeable but not severe synkinesis, contracture, and/or hemifacial spasm
		At rest normal symmetry and tone
		Motion	Forehead : Slight to moderate movement
			Eye : Complete closure with effort
			Mouth : Slight weak with maximum effort
IV	Moderately severe dysfunction	Gross	Obvious weakness and/or disfiguring asymmetry
		At rest normal symmetry and tone
		Motion	Forehead : None
			Eye : Incomplete closure
			Mouth : Asymmetry with maximum effort
V	Severe dysfunction	Gross	Only barely perceptible
		At rest asymmetry
		Motion	Forehead : None
			Eye : Incomplete closure
			Mouth : Slight movement
VI	Total paralysis	No movement