Abnormal facial movements

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Abnormal facial movements are relatively common, yet their diagnosis can be difficult because they can represent a disorder in themselves or may occur as a sign of underlying disease. In this article, Drs Gupta and Brumlik review a number of abnormal facial movements—focal seizures, dyskinetic movements, blepharospasm, hemifacial spasm, facial myokymia, fasciculations, myoclonus, and tics and habit spasms—as a guide to accurate differential diagnosis.