1, Hemifacial spasm is not psychogenic as was commonly thought in the past, although it may be aggravated by emotional stress.

2, Objective To explore the cause of hemifacial spasm (HFS) and evaluate the therapeutic efficacy of botulin A.

3, Objective To evaluate the imaging technique of magnetic resonance tomographic angiography (MRTA) in the investigation of etiology of hemifacial spasm (HFS).

4, Objective To investigate the clinical value of MR tomographic angiography(MRTA) in diagnosing the etiology of hemifacial spasm(HFS).

5, Objective To investigate the curative effects of botulinum toxin type A on hemifacial spasm.

6, Objective : To investigate the efficacy botulinum toxin A in the treatment of hemifacial spasm and blepharospasm.

7, Objective : To study the long term therapeutic effects of botulinum toxin type A on hemifacial spasm.

8, Conclusion: Mailuoning injection has a significant protective effect on the facial nerve demyelination of Hemifacial spasm and the very important applied value for therapy of Hemifacial spasm.

9, Conclusion The attention should be paid to the whole cisternal portion besides the proximal 1/3 segment of the facial nerve in neurovascular decompression for hemifacial spasm.

10, Objective To explore mental health state of patients with blepharospasm and hemifacial spasm.

11, Conclusion Combing and partially ligating the facial nerve root is a effective treatment for hemifacial spasm.

12, Objective: To provide anatomic basis for microvascular decompression of hemifacial spasm through retrolabyrinthine approach under endoscope.

13, Objective:The article introduces the experience and indications of treatment of hemifacial spasm with micrangium decompression.

14, Methods Magnetic resonance tomographic angiography (MRTA) was performed in all 121 patients with hemifacial spasm and 30 controls without as.