Vocal Cord Dysfunction
Definition
Vocal cord dysfunction (VCD) is a disorder that occurs when the vocal cords move toward each other when a person breathes, narrowing the airway and causing wheezing and difficulty breathing. VCD is also called paradoxical vocal cord motion (PVCM).
Description
Normally when an individual breathes in (inhales) or out (exhales) the vocal cords are drawn apart by the muscles of the larynx (voice box) to make a wider opening for air to move into or out of the lungs. In an individual with vocal cord dysfunction, instead of being drawn apart, the vocal cords move together, narrowing and partially blocking the airway. This is called adduction of the vocal cords. Adduction of the vocal cords happens most commonly during inhalation, although it can also happen during exhalation. As...
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