Most effective is a surgical procedure called microvascular decompression. A small incision behind the ear, and a tiny opening in the bone may relieve pressure on the facial nerve, thus ending the spasm.
In the majority of cases, partial or complete relief of HFS results.
Mayfield Clinic: hemifacial spasm
eMedicine: Hemifacial Spasm
St. John's Health Center: Hemifacial Spasm
Department of Neurosurgery: Hemifacial Spasm
AANEM: Hemisfacial Spasm
NINDS Hemifacial Spasm Information Page
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