What is Vocal Cord Paralysis?
This term describes a medical condition. Consult a healthcare professional for diagnosis and treatment.
Definition
Vocal cord paralysis (more accurately termed vocal fold paralysis) occurs when one or both vocal folds cannot move due to damage to the nerves that control the laryngeal muscles, most commonly the recurrent laryngeal nerve. Unilateral paralysis (one side) is far more common than bilateral and results in a breathy, weak voice because the paralysed fold cannot fully close against the functioning fold during phonation. Causes include thyroid surgery, neck or chest surgery, viral infections, tumours, and idiopathic cases.
Why it matters
Vocal fold paralysis significantly impacts voice quality, swallowing safety, and quality of life. The breathy voice that results from incomplete vocal fold closure makes it difficult to be heard in noisy environments and increases the effort of communication. In some cases, aspiration of food or liquid can occur because the vocal folds also function as a protective valve during swallowing. Treatment depends on the severity and whether recovery is expected. Temporary paralysis (as often occurs after viral infections or some surgeries) may resolve spontaneously over months. Voice therapy plays a crucial role both as a primary treatment for mild cases and as a complement to surgical interventions like injection laryngoplasty or thyroplasty. Exercises focus on improving vocal fold closure through increased effort techniques, head turning to compress the paralysed fold, and SOVT exercises to optimise the available closure.
How VocalCalm helps
VocalCalm offers exercises that can complement professional treatment for vocal fold paralysis, including SOVT exercises that help optimise vocal fold vibration even with incomplete closure, and breath support exercises that improve airflow control. Users with this condition should work with a speech-language pathologist who can guide exercise selection.
Related exercises
Straw Phonation (Basic)
Hum through a regular drinking straw on a comfortable pitch. This is the single most evidence-based exercise for muscle tension dysphonia, backed by decades of research from Dr. Ingo Titze and others.
Straw Phonation (Pitch Glides)
Glide smoothly from your lowest comfortable pitch to your highest and back down again, all while voicing through a straw. This builds on basic straw phonation by adding pitch movement to stretch and coordinate the vocal fold muscles.
Diaphragmatic Breathing
Place one hand on your chest and one on your belly, then breathe so that only your belly hand moves. This retrains the foundational breathing pattern that supports healthy voice production and reduces the tendency to breathe shallowly from the chest and shoulders.
Sustained Exhale
Breathe in for 4 counts, then exhale on a steady, controlled "sss" sound for as long as you can. This trains the breath control and airflow regulation that underpin all voice production.
Related terms
Practice exercises for Vocal Cord Paralysis
VocalCalm provides guided daily exercises based on the latest voice therapy research. Free for 14 days.
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