What is spasmodic dysphonia caused by?

What is spasmodic dysphonia caused by?

Researchers think it may be caused by a problem in the basal ganglia of the brain. This is the area that helps coordinate muscle movement. Spasmodic dysphonia may be inherited. It may start after a cold or the flu, injury to the voice box, a long period of voice use, or stress.

What are the causes of voice disorders?

Many risk factors can contribute to a voice disorder, including:

  • Aging.
  • Alcohol use.
  • Allergies.
  • Gastroesophageal reflux disease (GERD)
  • Illnesses, such as colds or upper respiratory infections.
  • Improper throat clearing over a long time.
  • Neurological disorders.
  • Psychological stress.

How does phonation occur?

Phonation is accomplished by alteration of the angle between the thyroid and cricoid cartilages (the cricothyroid angle) and by medial movement of the arytenoids during expiration. These movements result in fine alterations in vocal fold tension during movement of air, causing vibration of the vocal folds.

What causes functional dysphonia?

Muscle tension dysphonia is a “functional dysphonia,” whereby a pattern of muscle use develops from irritants, laryngitis or even stress, among other conditions. While the initial cause may go away, the voice changes remain because of the excessive squeeze or tension that results with voice use.

What causes a person to have a diplophonia voice?

It has been established that diplophonia can be caused by various vocal fold pathologies, such as vocal folds polyp, vocal fold nodule, recurrent laryngeal nerve paralysis or vestibular fold hypertrophy. The Voice Quality Symbol for diplophonia is V̬‼. ^ Ward; Sanders; Goldman; Moore (1969). “Diplophonia”.

Is there such a thing as luffing diplophonia?

Except for a type of luffing diplophonia that may be functionally produced, diplophonia tends to be a pathologic vocal phenomenon. This entry was posted in Multimedia Encyclopedia and tagged Audio, Diagnostics, Voice phenomenology by admin. Bookmark the permalink .

What is the medical term for double pitch phonation?

Diplophonia is double pitch phonation. Often seen with vocal cord paralysis, and in submucosal disorders such as epidermoid cyst and glottic sulcus. Except for a type of luffing diplophonia that may be functionally produced, diplophonia tends to be a pathologic vocal phenomenon. Use Up/Down Arrow keys to increase or decrease volume.

How are vocal folds affected by voice misuse?

The voice misuse results in repeated trauma to the vocal folds, which may then lead to structural (organic) changes to the vocal fold tissue. Speech-language pathologists (SLPs) may also be involved in the assessment and treatment of disorders that affect the voice mechanism (i.e., the aerodigestive tract) but are not classified as voice disorders.