Dysphonia Focal dystonia Laryngeal dystonia 2012-08-01T12:34:41Z HP:0012049 A form of focal dystonia that affects the vocal cords, associated with involuntary contractions of the vocal cords causing interruptions of speech and affecting the voice quality and often leading to patterned, repeated breaks in speech. Spasmodic dysphonia SNOMEDCT_US:3331000119108 UMLS:C1963946