Spasmodic dysphonia (SD) is a neurological disorder caused by dystonia ... but it is usually transient and the symptoms may recur after a few weeks or months. Repetitive vocal cord strain and ...

While it's possible a gene mutation can contribute to spasmodic dysphonia, researchers have yet to discover a gene specifically related to it, the NIDCD notes. It can also start after the flu ...

Kennedy has a rare disorder called spasmodic dysphonia — a spasm of the vocal muscles. Kennedy is one of an estimated 50,000 people in North America with spasmodic dysphonia, a neurological ...

Kennedy Jr.'s strained voice, due to spasmodic dysphonia (SD), has drawn ridicule ... the impact can be profound. After nearly 30 years at the all-news radio station WCBS 880 in New York City ...