Ultrasound-Guided Botox Injection for Salivary Glands
What is this procedure?
An ultrasound-guided Botox injection is a simple, low-risk procedure used to reduce the amount of saliva produced by the salivary glands. Botox (botulinum toxin) works by temporarily relaxing the nerves that stimulate saliva production. Ultrasound scanning helps your doctor to see the gland clearly and guide the needle safely to the right place.
Why is it done?
This treatment is commonly used for:
- Excessive saliva or drooling (sialorrhoea) – often related to conditions such as Parkinson’s disease, motor neuron disease, stroke, or cerebral palsy.
- Recurrent swelling or inflammation of the salivary glands.
- Frey’s syndrome – sweating or flushing while eating.
- Salivary fistulas or leaks – to temporarily reduce saliva flow and allow healing.
What happens during the procedure?
- You will lie comfortably on an examination couch.
- The skin over the gland will be cleaned.
- A fine needle is passed into the gland under ultrasound guidance.
- Botox is injected slowly into one or more areas of the gland.
- The procedure usually takes 10–15 minutes and most people find it only mildly uncomfortable.
After the procedure
- You can go home shortly afterwards.
- You may eat and drink normally unless advised otherwise.
- Mild swelling or tenderness can occur but usually settles within a day or two.
- The effect of Botox begins in 3–7 days and lasts 3–6 months.
Benefits
- Reduces excessive saliva and related symptoms
- Minimally invasive and quick
- Low complication rate
- Effects are temporary and adjustable with repeat treatment
Possible risks
These are uncommon and usually mild:
- Temporary dryness of the mouth
- Minor bruising or discomfort at the injection site
- Rarely, weakness of nearby muscles (e.g., lower lip)
- Very rarely, allergic reaction
Follow-up
A review appointment may be arranged to assess how well the treatment has worked and to plan future care if needed.
