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Journal entry for May 9, 1986: Today I saw the otolaryngologist Dr. B recommended and this specialist thinks he has diagnosed my voice problem! He calls it "spasmodic dysphonia," or "SD," and says it is a neurological, physiological problem and not psychological! How about that! I could hardly wait to tell my husband! After all this time, somebody actually thinks he knows what's wrong with me-and it's not "nerves."
- From the book, "Speechless" by Dot Sowerby
Spasmodic dysphonia (SD), a focal form of dystonia, is a neurological voice disorder that involves involuntary "spasms" of the vocal cords causing interruptions of speech and affecting the voice quality.
Spasmodic dysphonia was first described by L. Traube in 1871 as a spastic form of nervous hoarseness. Traube coined the misnomer "spastic dysphonia." Today, the terms "spasmodic dysphonia" or "laryngeal dystonia" are the most current and appropriate terms.
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