What a vocal cord polyp is
The voice is produced by the vibration of the vocal folds (vocal cords), two bands of tissue in the larynx, or voice box. NIDCD explains that vocal nodules, polyps and cysts are benign, noncancerous growths within or along the vocal folds, and that a polyp typically occurs on only one side.
The Royal Berkshire leaflet describes polyps as a bump, a stalk-like growth or a blister-like lesion, usually on one of the two vocal folds but sometimes on both. It notes that polyps are diagnosed by an ear, nose and throat (ENT) doctor.
How a polyp differs from nodules and cysts
NIDCD describes three kinds of benign growth:
- Nodules, sometimes called singer’s nodes, form in pairs on opposite sides of the vocal folds from too much pressure or friction, much like a callus.
- Polyps typically occur on only one side.
- Cysts are a hard mass of tissue inside a membrane sac within the vocal fold.
These differences are seen on examination of the larynx. They cannot be worked out from how the voice sounds, which is why any persistent change needs an ENT assessment.
How a polyp affects the voice
According to the Royal Berkshire leaflet, a polyp may restrict the voice to a lower pitch range, often sounding rough or breathy, and the voice tends to get worse with use. There may be a feeling of something in the throat, like stubborn mucus that is hard to clear, which can lead to forceful throat clearing.
The leaflet notes that polyps are usually painless. NIDCD describes hoarseness in general as a breathy, raspy or strained voice, softer in volume or lower in pitch, sometimes with a scratchy throat. Our guide on hoarseness covers the many other causes.
Vocal strain and other factors
The Royal Berkshire leaflet lists causes:
- trauma to the vocal folds, such as an episode of shouting, screaming or other vocal strain, combined with infection, allergy, pollution or hormonal disorders
- chronic irritation of the larynx, for example from smoking or breathing in fumes
- stomach acid reflux
NIDCD explains that reflux reaching the larynx, called laryngopharyngeal reflux, can irritate the vocal folds even without heartburn; see our guide on laryngopharyngeal reflux. It also notes that people who use their voice for work, such as teachers and singers, can develop persistent hoarseness.
When hoarseness needs evaluation
NIDCD advises seeing a doctor if your voice has been hoarse for more than three weeks, especially without a cold or flu. You should also see a doctor if you cough up blood, have difficulty swallowing or breathing, feel a lump in your neck, have pain when speaking or swallowing, or lose your voice completely for more than a few days.
NIDCD also warns that losing your voice suddenly during strenuous use such as yelling may be a vocal fold hemorrhage, which needs total voice rest and a prompt visit to the doctor. Hoarseness can sometimes be a symptom of laryngeal cancer, which is why prolonged hoarseness should be checked.
ENT examination
NIDCD explains that the doctor will ask about your health history and how long you have been hoarse, and may refer you to an otolaryngologist (ENT specialist). The specialist usually uses an endoscope, a flexible lighted tube, to get a clear view of the vocal folds. Special tests of voice irregularities or airflow may sometimes be used.
To prepare, it can help to note when the voice change began, whether it followed an episode of shouting or an illness, which tasks make it worse (teaching, singing, phone calls, long meetings), how it changes over the day, and whether you smoke or have reflux symptoms.
Voice therapy for selected polyps
The Royal Berkshire leaflet says voice therapy with a specialist speech and language therapist can be successful if the polyp is very small. The therapist helps you use your voice in a healthy way and works with you to improve how it sounds. NIDCD lists voice rest, voice therapy and surgery as the most common treatments for polyps, nodules and cysts.
The leaflet advises avoiding throat clearing where possible, because prolonged clearing irritates the throat, and taking sips of water or doing a strong swallow instead. For a sore throat it suggests asking a pharmacist about simple over-the-counter remedies, and seeking medical advice if pain persists. More on this approach is in our guide on voice therapy.
Surgery and voice rehabilitation
The Royal Berkshire leaflet says larger polyps are removed by an ENT specialist, and that surgery should be followed by voice therapy to reduce the chance of the polyp coming back. NIDCD includes surgery to remove the tissue among the common treatments.
Whether surgery is needed, and when, depends on the size and type of the lesion and on how much the voice matters to your daily life and work. These decisions are made after the specialist has examined the vocal folds.
Where the sources differ
First-line treatment. The Royal Berkshire leaflet links voice therapy to very small polyps and surgery to larger ones. NIDCD lists voice rest, voice therapy and surgery together for polyps, nodules and cysts, without separating them by size.
Causes. The leaflet gives a detailed list, from vocal trauma with infection, allergy or hormonal disorders to smoking and reflux. NIDCD links nodules to pressure and friction and discusses voice overuse and reflux as causes of hoarseness more generally.
Side. NIDCD says a polyp typically occurs on one side; the leaflet adds that it can occur on both.
In summary
A vocal cord polyp is a benign growth, usually on one vocal fold, that can make the voice rough, breathy or lower and tire with use. It usually follows vocal trauma combined with irritation from smoking, fumes, reflux, infection or allergy. Only an ENT examination with an endoscope can confirm it and rule out other causes of hoarseness.
Very small polyps may improve with voice therapy; larger ones are removed surgically, followed by voice therapy. Hoarseness lasting more than three weeks should be checked. In our ENT practice in Bilbao we assess persistent hoarseness and voice changes in adults (consultations are in Spanish).
Frequently asked questions about vocal cord polyps
These answers are general information and do not replace an examination or individual medical advice.
Do vocal cord polyps go away?
The sources do not say that polyps disappear on their own. Very small polyps may respond to voice therapy, while larger ones are usually removed by an ENT specialist.
How are vocal cord polyps treated?
With voice rest, voice therapy with a speech and language therapist and, for larger polyps, surgical removal followed by voice therapy to lower the chance of recurrence.
What are common causes of vocal cord polyps?
Vocal trauma such as shouting or screaming combined with infection, allergy, pollution or hormonal disorders, chronic irritation from smoking or fumes, and acid reflux.
Can symptoms show whether a growth is benign?
No. Polyps are benign, but hoarseness can also be a symptom of laryngeal cancer. Only an examination of the larynx can tell, so see a doctor if hoarseness lasts more than three weeks.
How is a polyp different from a nodule?
Nodules form in pairs on opposite sides of the vocal folds from pressure or friction. A polyp typically occurs on one side and can look like a bump, stalk or blister.
Can voice therapy help before or after surgery?
Yes. Voice therapy can be successful for very small polyps, and the Royal Berkshire leaflet says surgery should be followed by voice therapy to reduce recurrence.
Sources
- NIDCD (National Institutes of Health) · Hoarseness
- Royal Berkshire NHS Foundation Trust · Vocal fold polyps, speech and language therapy leaflet (August 2025)
This guide is for general information and does not replace medical advice. How a problem is diagnosed and treated depends on your examination and medical history. If you think you have an emergency, contact your local emergency services.