Spasmodic Dysphonia types

The three types of spasmodic dysphonia (SD) are adductor spasmodic dysphonia, abductor spasmodic dysphonia and mixed spasmodic dysphonia.

Adductor spasmodic dysphonia

In adductor spasmodic dysphonia (ADSD), sudden involuntary muscle movements or spasms cause the vocal folds (or vocal cords) to slam together and stiffen.These spasms make it difficult for the vocal folds to vibrate and produce voice. Words are often cut off or difficult to start because of the muscle spasms. Therefore, speech may be choppy but differs from stuttering. The voice of an individual with adductor spasmodic dysphonia is commonly described as strained or strangled and full of effort. Surprisingly, the spasms are usually absent while laughing, speaking at a high pitch, or speaking while singing, but singers can experience a loss of range or the inability to produce certain notes of a scale or with projection. Stress, however, often makes the muscle spasms more severe.

Abductor spasmodic dysphonia

In abductor spasmodic dysphonia, sudden involuntary muscle movements or spasms cause the vocal folds to open. The vocal folds cannot vibrate when they are open. The open position of the vocal folds also allows air to escape from the lungs during speech. As a result, the voices of these individuals often sound weak, quiet and breathy or whispery. As with adductor spasmodic dysphonia, the spasms are often absent during activities such as laughing or singing, but singers can experience a loss of range or the inability to produce certain notes of a scale or with projection.

Mixed spasmodic dysphonia

Mixed spasmodic dysphonia involves both muscles that open the vocal folds and those that close them and therefore has features of both adductor and abductor spasmodic dysphonia

5 thoughts on “Spasmodic Dysphonia types”

  1. hi, i am shekar, 39 years old. i hav a voice disorder, i guess its mixed spasmodic dyshonia.now my son who is 10 years old hav got similar problem. suggest whats the treatment for this i hav tryed speech therpy, but its ineffective. i live in bangalore ,india.

  2. I was diagnosed in 1989 with dysphonia. Then from another throat doctor in 1998 a doctor said I did not have it. So who to believe? When I say a word the vowel sounds tighten up in my throat and don’t want to come out. It is very embarassing. Other than that I speak fine other than I can not talk to someone across the room nor can I sing anymore which use to be my profession. When I read outloud or try to sing I feel strangled and cough. What can I do to help myself or get the right diagnoses? Thank you because I have suffered with this for so long.

  3. I am suffering from a speech disorder where my voice i barley a whisper. its very hard to communicate some days i feel like i cant talk at all was wondering if this has happened to anyone else and where to seek treatment. i suspect that i hve spasmatic disorder.

  4. I have spasmodic dysphonia – adductor I think. I have those symptoms e.g. strangled speech – which gets worse with any emotional stress and on the phone.

    I have read the books of those who have healed themselves. I can speak perfectly when I am teaching Integrated Energy Therapy(R) that is Healing with Angels. If I am teaching for 3 days, speech is perfect and for several days after. That is why I have improved. Also, I find lying on a physio ball or cushions helps to release tension in the diaphragm and my speech is much easier. I would like to find a self help group in the South of Ireland. Sending Angelic healing to all of you. Gretta

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