Laryngeal muscle weakness

Introduction The voice is not loud, the voice is leaking, singing and singing, the speech can not last, the multi-lingual is dumb; the inspection is shortened when the sound is heard, the sound range is narrow, the vocal cords are weak on both sides, and the closure is incomplete, which is the weakness of the laryngeal muscle. More common in elderly patients with kidney failure and vocal overwork, mostly due to lack of qi, laryngeal muscle strain, different from myasthenia gravis or nerve paralysis. Vocal cord insufficiency refers to a disease in which the laryngeal muscles are incapable of causing hypokinetic glottic dyskinesia during vocalization, as well as laryngeal muscle weakness and vocal fatigue.

Cause

The reason is that excessive use of sound causes the strain of the throat to pronounce muscles, especially the nail muscles. Forcing a loud voice for a long time will increase the activity of the laryngeal muscles, causing vocal fatigue, and the elderly are also prone to this disease, and mental factors can cause this disease. Vocal cord insufficiency refers to a disease in which the laryngeal muscles are incapable of causing hypokinetic glottic dyskinesia during vocalization, as well as laryngeal muscle weakness and vocal fatigue. Can cause this disease to occur.

an examination

Related inspection

Determination of respiratory muscle tone, breath test, respiratory exercise test

Patients often complain that they are prone to fatigue, or when they are vocal, they are painful and weak, and their voices are hoarse.

Indirect laryngoscopy and fiber laryngoscopy showed that the bilateral vocal cord activity was weakened, the vocal cord muscle tension was reduced, and the shuttle-type fissure was seen when closed. Vocal cord insufficiency refers to a disease in which the laryngeal muscles are incapable of causing hypokinetic glottic dyskinesia during vocalization. It is also a laryngeal muscle weakness and vocal fatigue. It is recommended that the above clinical symptoms be combined with a laryngoscope to make a diagnosis.

Differential diagnosis

1, myasthenia gravis: Although only a small part of the patient showed throat symptoms, most of them have laryngeal muscle involvement. For patients who are treated with weak voice and poor pronunciation, myasthenia gravis should be used as a necessary differential diagnosis.

2, glottic dyskinesia: glottic dyskinesia is caused by a variety of causes of glottal motor dysfunction, clinical vocal disorders as the main manifestation of a type of disease. Can be divided into neurological, muscular, joint and functional.

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