Objective: To find simple

economic and effective important factors which can objectively quantify the prcgnosis of Bell’s palsy. Methods: Changes of the House-Brackmann facial function grades before and after treatment were investigated in 155 cases of Bell’s palsy by prospective cohort study to analyze 16 items of affecting the prognosis of this disease

including age

sex

side of palsy

whether or not having a good rest before and during treatment

symptoms of upper respiratory tract infection before onset

cold-wind affected history before onset

herpes on the auricle

pain around ears

facial function grades on the 10th day after onset

whether having tearing within 10 days after onset

eyelid closing ability

taste on the front 2/3 of the tongue

facial pain

wrinkle

ability to blow out the cheek and to clear away food in the affected side

etc. Results: Using multiple stepwise regression to get the best equation: y=0. 2504 + 0.0109x

1

+ 0.2698x

2

+ 0.4789x

3

+ 0.1396x

4

+ 0.4210x

5

+ 1. 3938x

6

. Conclusion: Clinical therapeutic effects are correlated positively with 6 factors including age

sex

whether having symptoms of the upper respiratory tract infection before onset

a good rest

the extent of pain around ears

appearance of auricle herpes and eyelid closing ability. That is

for the older patients or the patients with upper respiratory tract infection history before onset

poor resting quality

more serious pain around ears

herpes on the auricle

bigger fissure of eyes

prognosis is poor.