Definitions for "Spasmodic dysphonia"
The common name for laryngeal dystonia. Dystonia is a neurologic movement disorder, caused by a problem in the nervous system. The vocal folds vibrate normally, but they spasm intermittently during speech. There are three different types of spasmodic dysphonia (SD): abductor SD, adductor SD, and mixed abductor and adductor SD. Term found in Types of Voice Disorders: Spasmodic Dysphonia.
momentary disruption of voice caused by involuntary movements of one or more muscles of the larynx (voice box).
A manifestation of dystonia. SD involves the muscles of the larynx and surrounding muscles and therefore involves speech. In individuals with SD, speech in blocked by intermittent spasms of the voice box (larynx).