Abstract
Most people experience trivial movements of their facial muscles during daily life. These are often barely recognizable, but they sometimes imply pathological conditions that require appropriate treatments. Hemifacial spasm (HFS) is a representative movement disorder affecting the face. It is a common condition that can cause discomfort and cosmetic problems, as well as psychological impairments. Fortunately, remarkable advancements in treatment have been achieved by studying HFS. In this chapter, the authors review the current knowledge of HFS and its optimal treatment strategies, focusing on surgical options. In addition, Meige syndrome is summarized as an important differential diagnosis with a completely different etiology and management strategy, including deep brain stimulation.
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