Assuming that the diagnosis is correct, Botox
(botullinum toxin) injections to the affected facial muscles
may provide temporary relief for about 6 months after each injection, but are expensive.
Patients with new onset symptoms or worsening symptoms should have an MRI or CT scan
-- because other possibilities for involuntary facial spasm include compressive tumors which result in aberrent nerve
This is a difficult condition to treat and is not curable.