Vocal Cord Injections
Vocal cord injections are a specialist treatment for neurological voice disorders caused by involuntary muscle spasm within the larynx.
Overview
Vocal cord injections are a specialist treatment for neurological voice disorders caused by involuntary muscle spasm within the larynx. The procedure is also known as a laryngeal botulinum toxin injection or intralaryngeal neurotoxin injection.
A small amount of botulinum toxin is injected into targeted vocal cord muscles to reduce abnormal contractions. This can improve voice clarity reduce strain and lessen voice breaks.
- Consultant-led diagnosis and treatment
- Performed in clinic under local anaesthetic
- EMG guidance used where appropriate
- Effects develop over several days
- Benefit usually lasts several months
Treatment is individualised following detailed voice assessment.
Conditions we help with
Spasmodic dysphonia
Spasmodic dysphonia is a form of focal dystonia affecting the voice. Dystonia is a neurological movement disorder that causes involuntary muscle contractions due to disrupted nerve signalling.
When the condition affects the larynx it can lead to:
- Strained or strangled speech
- Sudden voice breaks
- Effortful talking
- Intermittent loss of sound
Symptoms often fluctuate and may worsen with stress or prolonged speaking.
Laryngeal dystonia
Laryngeal dystonia describes abnormal muscle activity within the voice box. It can significantly affect communication confidence particularly for professional voice users.
Other neurological voice disorders
Some patients develop voice disturbance linked to broader neurological conditions. Careful assessment is essential to confirm diagnosis and determine whether injection therapy is appropriate.
Structural problems such as vocal cord nodules polyps or inflammation require different treatment pathways.
Tests and treatments
Accurate diagnosis is central to effective care.
Specialist voice assessment
Assessment typically includes:
Detailed clinical history
Perceptual voice analysis
Flexible nasendoscopy
Flexible nasendoscopy involves passing a fine camera through the nose to examine the larynx during speech. This allows direct assessment of vocal cord movement and muscle behaviour.
Where required electromyography or EMG is used. EMG measures electrical activity in muscles and can guide precise placement of the injection.
The injection procedure
The procedure is performed in clinic using local anaesthetic.
A fine needle is inserted through the neck into the targeted laryngeal muscle. A small dose of botulinum toxin is injected to block acetylcholine release at the nerve ending. Acetylcholine is the chemical messenger that triggers muscle contraction. By reducing this signal the muscle relaxes and spasm decreases.
Voice changes are usually noticed within a few days. A temporary breathy quality is common as the muscle settles. Most patients experience improved stability and reduced effort once balance is achieved.
Effects typically last three to four months though duration varies between individuals.
Speech and language therapy may be recommended alongside treatment to optimise vocal technique.
Your appointment
Initial consultation focuses on confirming the diagnosis and understanding how symptoms affect daily life.
If vocal cord injections are appropriate you will receive a clear explanation of:
- Expected benefits
- Temporary nature of treatment
- Likely voice changes after injection
- Possible risks
- Follow up planning
Common short term effects include mild breathiness temporary swallowing difficulty or coughing with liquids. These effects usually improve as the voice stabilises.
Repeat injections may be required when symptoms gradually return. Treatment intervals are tailored to the individual rather than fixed.
Our consultants
Vocal cord injections are delivered by experienced ENT consultants with specialist expertise in voice and laryngeal disorders.
For more information about our team please visit our ENT consultant profiles and our Throat services page.
Vocal Cord Injection FAQs
- Is laryngeal botulinum toxin safe?
Botulinum toxin has been used for many years to treat focal dystonia and other muscle overactivity conditions. When administered by an experienced clinician it is considered a well established treatment.
- Will it cure spasmodic dysphonia?
Botulinum toxin does not cure dystonia. It controls symptoms by reducing abnormal muscle activity.
- How often are injections needed?
Many patients require treatment every three to four months although timing depends on symptom recurrence.
- Is recovery immediate?
Some breathiness is common in the first few days. Improvement in voice stability usually follows once the muscle effect balances.
Why Choose The Forbury Clinic?
Care is led by experienced consultants with a specialist interest in complex throat and voice disorders. Assessment focuses on accurate diagnosis before treatment is considered.
Patients benefit from:
- Consultant delivered procedures
- Careful selection for injection therapy
- Access to flexible nasendoscopy and EMG guidance
- Integration with speech and language therapy where appropriate
- Clear follow up and continuity of care
The aim is to provide measured evidence-based treatment within a discreet professional setting.
