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Aphonia is defined as the inability to produce voiced sound. Damage to the nerve may be the result of surgery (e.g.,
thyroidectomy A thyroidectomy is an operation that involves the surgical removal of all or part of the thyroid gland. In general surgery, endocrine or head and neck surgeons often perform a thyroidectomy when a patient has thyroid cancer or some other conditi ...
) or a tumor. Aphonia means "no sound". In other words, a person with this disorder has lost their voice.


Causes

Injuries are often the cause of aphonia. Minor injuries can affect the second and third dorsal area in such a manner that the lymph patches concerned with coordination become either atrophic or relatively nonfunctioning. Tracheotomy can also cause aphonia. Any injury or condition that prevents the vocal cords, the paired bands of muscle tissue positioned over the trachea, from coming together and vibrating will have the potential to make a person unable to speak. When a person prepares to speak, the vocal folds come together over the trachea and vibrate due to the airflow from the lungs. This mechanism produces the sound of the voice. If the vocal folds cannot meet together to vibrate, sound will not be produced. Aphonia can also be caused by and is often accompanied by fear.


Psychogenic

Psychogenic aphonia is often seen in patients with underlying psychological problems. Laryngeal examination will usually show bowed vocal folds that fail to adduct to the midline during phonation. However, the vocal folds will adduct when the patient is asked to cough. Treatment should involve consultation and counseling with a speech pathologist and, if necessary, a psychologist. In this case, the patient's history and the observed unilateral immobility rules out function aphonia.


See also

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Muteness Muteness or mutism () is defined as an absence of speech while conserving or maintaining the ability to hear the speech of others. Mutism is typically understood as a person's inability to speak, and commonly observed by their family members, caregi ...
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Lists of language disorders The following is a list of language disorders. A language disorder is a condition defined as a condition that limits or altogether stops natural speech Speech is a human vocal communication using language. Each language uses phonetic combina ...


References


External links

{{Medical resources , ICD10 = {{ICD10, R, 49, 1, r, 47 , ICD9 = {{ICD9, 784.41 , MeshID = D001044 , DiseasesDB = 28364
Muscle Tension Aphonia Video Example
Symptoms and signs: Speech and voice Neurobiological brain disorder Larynx disorders Muteness