This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Spasmodic dysphonia

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

This is a rare focal dystonia of the larynx that affects the vocal muscles. This condition causes abnormal speech production with a hoarse or strained voice and often leads to aphonia. In adductor spasmodic dysphonia, paralysis of the thyroarytenoid muscles helps prevent the development of increased subglottic pressure that is associated with vocal spasms. The paralysis of the thyroarytenoid muscles is achieved via injections of botulinum toxin type A. There is a success rate reported of up to 92% and side effects are rare, and generally limited to problems with swallowing.

Ref: BMJ (1997), 315, 354-60.


Related pages

Create an account to add page annotations

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.