The effects start within three days and can last up to three months, though the effectiveness diminishes over years of use, according to the Mayfield Clinic.
For some patients, Botox and medications do not alleviate the symptoms, so surgery is need. The type of surgery used for hemifacial spasms is called microvascular decompression. In this procedure, the surgeon relieves compression on the facial nerve by placing a Teflon sponge between the nerve and the blood vessel putting pressure on it.
With this surgery, 85 percent of patients have immediate relief, 9 percent have diminished symptoms, 2 percent have a delay in having facial spasms, and 7 percent have a recurrence of symptoms, noted the Mayfield Clinic. Side effects can occur with this surgery, including facial weakness and decreased hearing.
University of Maryland Medical Center. Hemifacial Spasm. Web. 5 December 2011
National Institute of Neurological Disorders and Stroke. Hemifacial Spasm Information Page. Web. 5 December 2011
Mayfield Clinic. Hemifacial Spasm. Web. 5 December 2011
University of Florida Department of Neurosurgery. Hemifacial Spasm. Web. 5 December 2011
Reviewed December 6, 2011
by Michele Blacksberg RN
Edited by Jody Smith