What is spasmodic dysphonia (SD)?

Spasmodic dysphonia (SD) is a voice disorder. The actual word “dysphonia” comes from “dys—meaning wrong and “phonia” which comes from phonation—the process of making voice. So, if there is a problem with how the muscles and tissues function to make voice, we identify this as a dysphonia. In spasdmodic dysphonia, there are abrupt, unintentional movements (spasms) in the voice box that cause abnormal voice production (dysphonia).

Patients often describe their voices as “tight” or “strained” or sometimes even “choked.” One of the characteristics is that patients report increased effort to say words and often there are specific words that consistently cause a problem for the patient.

Videostroboscopy, laryngeal EMG, and a complete voice evaluation can help make the diagnosis. Botox injections and voice therapy are two common approaches to treat this, though we continue to look for innovations and fresh approaches.

For more information, please visit the National Spasmodic Dysphonia Association (NSDA) https://www.dysphonia.org/