spasmodic dysphonia


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Related to spasmodic dysphonia: Spasmodic torticollis

spasmodic dysphonia

a spasmodic contradiction of the intrinsic muscles of the larynx excited by attempted phonation, producing either adductor or abductor subtypes caused by a central nervous system disorder. A localized form of movement disorder.

spasmodic dysphonia

Laryngeal dystonia, spastic dysphonia Neurology A voice disorder characterized by spasmodic contraction of laryngeal muscles, which chokes off words as uttered, resulting in strained and strangled speech with breaks in rhythm; SD may be accompanied by other dystonias–eg,
blepharospasm, oromandibular dystonia, torticollis, writers' cramp Management Sectioning of recurrent laryngeal nerve may be complicated by late failure; botulinum toxin injection into laryngeal muscles may be preferred

spas·mod·ic dys·pho·ni·a

(spaz-mod'ik dis-fō'nē-ă)
A spasmodic contraction of the intrinsic muscles of the larynx excited by attempted phonation, producing either adductor or abductor subtypes caused by a central nervous system disorder. A localized form of movement disorder.
Synonym(s): spastic dysphonia.
References in periodicals archive ?
Maximum Phonation Time (MPT) was expected to increase with botulinum therapy in adductor spasmodic dysphonia cases due to decrease in vocal cord adduction, which causes abrupt loss of voice.
Surgical treatment for adductor spasmodic dysphonia: efficacy of bilateral thyroarytenoid myectomy under microlaryngoscopy.
Comparison of botulinum toxin injection procedures in adductor spasmodic dysphonia. J Otolaryngol 1995; 24:345-51.
In adductor spasmodic dysphonia, sudden involuntary muscle movements or spasms cause the vocal folds (or vocal cords) to slam together and stiffen.
Spasmodic Dysphonia (SD), also known as Laryngeal Dystonia, is a neurological disorder that affects the vocal cords.
Adductor spasmodic dysphonia is far more common than the abductor type (10:1); (7)but rarely, patients may have both simultaneously (mixed laryngeal dystonia).
There are three types of spasmodic dysphonia. In adductor spasmodic dysphonia, the vocal folds close together and stiffen with spasms, making vibration of the cords difficult.
In 1986, Blitzer et al were the first to report the injection of botulinum toxin into the larynx as a treatment for spasmodic dysphonia. (10) Since then, it has been used for a variety of laryngeal dystonias and tremulous disorders.
Its one drawback is that, at present, several of the conditions that might be of particular interest to vocalists, for example, spasmodic dysphonia, are merely listed without any explanatory material.
Philadelphia, PA, November 05, 2016 --(PR.com)-- The National Spasmodic Dysphonia Association (NSDA) is hosting an Education Conference on spasmodic dysphonia on Saturday, November 5, at the Hampton Inn City Center.