Spasmodic Dysphonia

(SD; Adductor Laryngeal Breathing Dystonia (ABLD); Adductor Spasmodic Dysphonia; Abductor Spasmodic Dysphonia; Dysphonia, Episodic Laryngeal Dyskinesia; Laryngeal Dystonia; Spastic Dysphonia)

Definition

Spasmodic dysphonia (SD) is a voice disorder. The muscles of the throat freeze or go into spasms. Words are strangled and strained or they don’t get out at all. Sounds are also distorted.The main types of SD include:
  • Adductor spasmodic dysphonia—spasms cause muscles to stiffen and close
  • Abductor spasmodic dysphonia—spasms cause muscles to spastically open
  • Mixed spasmodic dysphonia
Throat
Throat
Spasmodic dysphonia affects the throat muscles.
Copyright © Nucleus Medical Media, Inc.

Causes

Often, the exact cause of SD is unknown. It is a disorder of the central nervous system. The areas of the brain that control these muscle movements are deep within the brain.

Risk Factors

This condition is more common in women and people who are between 30 and 50 years of age.Factors that may increase your chance of developing SD include:
  • Degenerative brain diseases such as amyotrophic lateral sclerosis
  • Another movement disorder such as tardive dyskinesia
  • Family history of SD—In some families, a gene on chromosome 9 may be connected to SD.
  • Brain infection such as encephalitis
  • Exposure to toxins or certain medications such as phenothiazines

Symptoms

Symptoms of SD include:
  • Squeaky, strained speech
  • No speech at all
  • Speech with the wrong pitch and tone
  • Breaks in speech
  • Breathy voice

leave comments
0
Did you like this? Share with your family and friends.
Related Topics:
Current Research From Top Journals


Chewing Gum After Surgery May Improve Digestive Tract Recovery
April 2015

A systematic review found that participants given chewing gum after abdominal surgery may have a faster return to normal for their digestive system. Unfortunately, the quality of trials is low and more research will need to be done before this simple solution is confirmed.

dot separator
previous editions

Early Peanut Consumption Associated with Lower Risk of Peanut Allergy in High Risk Children
March 2015

Breastfeeding May Decrease the Risk of Childhood Obesity
February 2015

Tonsillectomy May Reduce Number of Sore Throat Days in Children
February 2015

dashed separator

Advertisement

Our Free Newsletter
click here to see all of our uplifting newsletters »

 

Advertisement

Advertisement

DiggDeliciousNewsvineRedditStumbleTechnoratiFacebook