| 1. | The incidence of hemifacial spasm is approximately 0.8 per 100, 000 persons.
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| 2. | Botulinum toxin is highly effective in the treatment of hemifacial spasm.
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| 3. | Hemifacial spasm is much more common in some Asian populations.
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| 4. | Patients with hemifacial spasm were shown to have decreased sweating after botulinum toxin injections.
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| 5. | MRI imaging should be the initial screening procedure in the assessment of patients with hemifacial spasm.
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| 6. | Imaging procedures should be done in all unusual cases of hemifacial spasm and when surgery is contemplated.
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| 7. | Besides hemifacial spasm, botox can help other diseases, including ones that involve involuntary muscle contractions or spasms.
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| 8. | Like blepharospasm, the frequency of contractions in hemifacial spasm may range from intermittent to frequent and constant.
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| 9. | Microvascular decompression relieves pressure on the facial nerve, which is the cause of most hemifacial spasm cases.
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| 10. | In 1977, 47 cases of hemifacial spasm underwent microvascular decompression of the facial nerve using the operating microscope.
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