Table 2

House-Brackmann scoring of facial function

GradeDefinition
INormal facial functions in all areas
IISlight weakness noticeable only on close inspection
Complete eye closure with minimal effort
Slight asymmetry of smile with maximal effort
No synkinesis, contracture of haemifacial spasm
IIIObvious weakness, but not disfiguring
May not be able to lift eyebrow
Complete eye closure and strong but asymmetrical mouth movement with maximal effort
Obvious, but not disfiguring synkinesis, mass movement or spasm
IVObvious disfiguring weakness
Inability to lift brow
Incomplete eye closure with asymmetry of mouth with maximal effort
Severe synkinesis, mass movement, spasm
VMotion barely perceptible
Incomplete eye closure, slight movement of corner of mouth
Synkinesis, contracture and spasm usually absent
VINo movement, loss of tone, no synkinesis, contracture, or spasm