Hemifacial spasm HFS is an involuntary twitching or contraction of the facial muscles on one side of the face. Medication, surgery, and Botox injections are treatment options to stop the spasms and relieve the discomfort. Each treatment offers benefits, but each has limitations. You and your doctor should determine which treatment is best.
Hemifacial spasm: What you need to know
Involuntary Facial Movements (Hemifacial Spasm) | Cleveland Clinic
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Hemifacial spasm HFS is a rare neuromuscular disease characterized by irregular, involuntary muscle contractions spasms on one side hemi- of the face -facial. This disease takes two forms: typical and atypical. In typical form, the twitching usually starts in the lower eyelid in orbicularis oculi muscle.
TAN, L. CHAN, E. Hemifacial spasm HFS is characterized by tonic and clonic contractions of the muscles innervated by the ipsilateral facial nerve. It is important to distinguish this from other causes of facial spasms, such as psychogenic facial spasm, facial tic, facial myokymia, blepharospasm, and tardive dyskinesia. Magnetic resonance imaging and angiography studies frequently demonstrate vascular compression of the root exit zone of the facial nerve.