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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]
This means that it is distinct from a resting tremor, such as that caused by Parkinson's disease, which is not correlated with movement. [7] Unlike Parkinson's disease, essential tremor may worsen with action. Essential tremor is a progressive [8] [9] [10] neurological disorder, and the most common movement disorder. Though not life-threatening ...
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: These include: Vocal fold nodules
Can be caused by Chlorpromazine. Oromandibular dystonia: muscles of the jaw and muscles of tongue: 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 ...
Idiopathic familial dystonia 333.6 G24.1 Idiopathic nonfamilial dystonia 333.7 G24.2 Spasmodic torticollis: 333.83 G24.3 Idiopathic orofacial dystonia: G24.4 Blepharospasm: 333.81 G24.5 Other dystonias G24.8 Other extrapyramidal movement disorders G25 Essential tremor: 333.1 G25.0 Drug induced tremor G25.1 Other specified form of tremor G25.2 ...
Muscle tension dysphonia (MTD) was originally coined in 1983 by Morrison [2] and describes a dysphonia caused by increased muscle tension of the muscles surrounding the voice box: the laryngeal and paralaryngeal muscles. [3] MTD is a unifying diagnosis for a previously poorly categorized disease process.
Vocal cord paresis, also known as recurrent laryngeal nerve paralysis or vocal fold paralysis, is an injury to one or both recurrent laryngeal nerves (RLNs), which control all intrinsic muscles of the larynx except for the cricothyroid muscle.
The disease is an inherited autosomal dominant disease, but the physiological cause of the dysfunction is still unclear. An acidophyllic mucopolysaccharide-containing substance was discovered, especially in cochleas, maculas, and crista ampullaris of patients with DFNA9 (a chromosome locus), as well as severe degeneration of vestibular and cochlear sensory axons and dendrites.