title: Primary vs postparalytic hemifacial spasm.
authors.forename: Eng-King
authors.initials: EK
authors.lastname: Tan
authors.forename: Ling-Ling
authors.initials: LL
authors.lastname: Chan
mesh_terms: D003937:Diagnosis, Differential; D019569:Hemifacial Spasm / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology* / Q000473:pathology*; D006801:Humans; D011446:Prospective Studies