Deep brain stimulation for movement disorders
Deep brain stimulation (DBS) is a specialised treatment used to manage movement disorders that don’t respond well to medication. It has transformed the way conditions like Parkinson’s disease, essential tremor and dystonia are treated, helping many patients regain control and independence.
What is deep brain stimulation?
DBS is a surgical treatment that involves implanting very fine electrodes into specific areas of the brain that regulate movement. These electrodes are connected by wires under the skin to a small device called a neurostimulator, usually placed in the chest. The device sends carefully controlled electrical signals to the brain, which can help reduce abnormal movement patterns.
Although DBS doesn’t cure neurological conditions, it can significantly ease symptoms and improve quality of life.
Which conditions can be treated with DBS?
DBS is most commonly used to treat:
- Parkinson’s disease, particularly when tremors, stiffness or fluctuations in movement become harder to manage with medication
- Essential tremor, a condition that causes rhythmic shaking, usually in the hands
- Dystonia, which causes muscles to contract involuntarily and leads to abnormal postures or movements
Some patients with conditions like epilepsy or Tourette’s syndrome may also be considered for DBS in certain cases.
Who is suitable for DBS?
Suitability is determined by a consultant neurologist or neurosurgeon through a detailed assessment. This includes evaluating how well symptoms have responded to medication, how much the condition impacts daily life, and whether other health conditions might affect surgical outcomes.
Patients with Parkinson’s, for example, may be considered if they’ve had the condition for several years and are experiencing side effects or diminishing effects from medication.
What happens during the procedure?
DBS is typically carried out in two stages:
- Electrode placement – Using advanced brain imaging and precise surgical techniques, electrodes are inserted into the brain through small openings in the skull. Sometimes this is done while the patient is awake to monitor responses.
- Implantation of the pulse generator – The stimulator device is implanted under the skin, usually in the chest. It’s connected to the brain electrodes with thin, internal wires.
Once everything is in place, the system is switched on and fine-tuned over time to deliver the best results for the patient.
What benefits can patients expect?
After successful DBS, many people experience:
- Reduced tremors or involuntary movements
- Smoother, more stable control of muscles
- Fewer "off" periods if they’re taking Parkinson’s medication
- A potential reduction in the amount of medication needed
- A better ability to complete everyday tasks
Results vary, and while some may feel a dramatic improvement, others may benefit in more subtle but still meaningful ways.
What about recovery and risks?
Recovery is usually straightforward, with most patients discharged within a few days. Adjustments to the device settings are often made over several outpatient appointments in the weeks following surgery.
As with all surgery, there are risks, such as infection, bleeding, or side effects from stimulation, like speech or balance issues. These risks are low, particularly in experienced surgical centres.
A hopeful future for those living with movement disorders
Deep brain stimulation offers a new lease of life to many people whose movement disorder symptoms have become difficult to manage. While it may not be right for everyone, it represents a major advance in neurological treatment.
If you or a loved one are living with a movement disorder and struggling with symptoms despite medication, a consultation with a specialist can help determine whether DBS might be a suitable next step.