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Spasmodic dysphonia (SD) is a rare disorder that causes involuntary movements of the voice box, says Saul Frankford, an assistant professor in the School of Behavioral and Brain Sciences at the ...
Kennedy has a condition called spasmodic dysphonia, a neurological disorder that impacts the muscles in the voice box, also known as the larynx, according to the National Institute on Deafness and ...
Spasmodic dysphonia, also known as laryngeal dystonia, is a disorder in which the muscles that generate a person's voice go into periods of spasm. [1] [2] This results in breaks or interruptions in the voice, often every few sentences, which can make a person difficult to understand. [1]
Abductor spasmodic dysphonia is another type of condition, which causes “sudden involuntary spasms that trigger the vocal cords to open,” per John Hopkins Medicine.
Voice disorders can be divided into two broad categories: organic and functional. [9] The distinction between these broad classes stems from their cause, whereby organic dysphonia results from some sort of physiological change in one of the subsystems of speech (for voice, usually respiration, laryngeal anatomy, and/or other parts of the vocal tract are affected).
Voice disorders [1] are medical conditions involving abnormal pitch, loudness or quality of the sound produced by the larynx and thereby affecting speech production. These include:
Researchers say it is still unclear what causes spasmodic dysphonia and there is no known cure but it typically occurs in those who are middle-aged. Show comments Advertisement
Causes distortions of the mouth and tongue. Spasmodic dysphonia/Laryngeal dystonia muscles of larynx: Causes the voice to sound broken, become hoarse, sometimes reducing it to a whisper. Focal hand dystonia (also known as musician's or writer's cramp). single muscle or small group of muscles in the hand