Abstract
Even though hemifacial spasm is not a life-threatening disorder, it could be disabling for patients and affect their quality of life. Therefore, symptomatic management of spasm as well as curative treatment is important. Among symptomatic treatment options, botulinum toxin injection therapy is safe and effective treatment for hemifacial spasm. Considering the goal of botulinum toxin injection is symptomatic control of spasm, there are essential steps to get the maximal benefit and minimal side effects from botulinum toxin. Physicians should set up their protocol for injection (routine protocol), and discuss expected results (for both effects and side effects) with patients. Additionally, it is important to recognize target muscles and target dose for each muscle based on the facial muscle anatomy and the involvement of spasm. In this chapter, we will review all these steps for botulinum toxin injection therapy, based on the previous literature and our experiences at Samsung Medical Center. The basic mechanism and pharmacologic characteristics of botulinum toxin will be not discussed in this chapter but in the next chapter (“Medical treatment of hemifacial spasm and other involuntary facial movement disorders”).
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Youn, J., Jang, W., Park, J.K. (2020). Botulinum Toxin Injection in Hemifacial Spasm. In: Park, K., Park, J.S. (eds) Hemifacial Spasm. Springer, Singapore. https://doi.org/10.1007/978-981-15-5417-9_13
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DOI: https://doi.org/10.1007/978-981-15-5417-9_13
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