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Another cause may be a medical condition impacting the physical structures involved in speech, for example, loss of voice due to the injury, paralysis, or illness of the larynx. [7] Anarthria is a severe form of dysarthria , in which the coordination of movements of the mouth and tongue or the conscious coordination of the lungs are damaged.
In neuropathy, primary progressive aphasia (PPA) [1] is a type of neurological syndrome in which language capabilities slowly and progressively become impaired. As with other types of aphasia, the symptoms that accompany PPA depend on what parts of the brain's left hemisphere are significantly damaged.
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: Vocal fold nodules; Vocal fold cysts; Vocal cord paresis; Reinke's edema; Spasmodic dysphonia; Foreign accent syndrome; Bogart–Bacall syndrome; Laryngeal ...
In some cases the cause is unknown. However, there are various known causes of speech impairments, such as hearing loss, neurological disorders, brain injury, an increase in mental strain, constant bullying, intellectual disability, substance use disorder, physical impairments such as cleft lip and palate, and vocal abuse or misuse. [12]
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]
Aphasia, also known as dysphasia, [a] is an impairment in a person’s ability to comprehend or formulate language because of damage to specific brain regions. [2] The major causes are stroke and head trauma; prevalence is hard to determine, but aphasia due to stroke is estimated to be 0.1–0.4% in developed countries. [3]
Loss of function or feeling of one or both of the vocal folds caused by injury or disease to the nerves of the larynx. Laryngectomy Surgery to remove part or all of the larynx (voice box). Laryngitis Hoarse voice or the complete loss of the voice because of irritation to the vocal folds (vocal cords). Laryngoplasty
There can also be some emotional and mental side effects to dysprosody. Each individual has a distinct voice characterized by all the prosodic elements. Once a person loses control of the timing, pitch, melody, etc. of his speech, he can also feel a sense of loss of personal identity, which can sometimes lead to depression. [3]