Deep brain stimulation is for the small minority of adults whose tics remain severe and disabling after behavioural therapy and medication have been properly tried. It is not a treatment for Tourette syndrome in general. Most tics improve on their own through late adolescence and early adulthood, and most people with Tourette syndrome never need surgery of any kind.
At a glance
- Usual targets
- Centromedian thalamic region; anteromedial or posteroventral globus pallidus internus; occasionally the anterior limb of the internal capsule
- Who it is for
- Adults with severe tics causing injury, pain or serious disability, persisting despite behavioural therapy and medication
- Required first
- Habit-reversal or exposure-based behavioural therapy, adequate medication trials, and treatment of coexisting OCD, ADHD, anxiety or depression
- Typical result
- Around 45% reduction in overall tic severity at one year in the largest international series
- Not a cure
- Tics are reduced, not abolished; natural fluctuation continues
- Board approval
- Independent psychiatric assessment and multidisciplinary approval are required before surgery
Who this page is not for
Tourette syndrome usually declares itself in childhood, peaks around puberty and then, in the majority of people, becomes considerably milder in adult life. Behavioural therapy works. Medication works for many. A family reading about brain surgery for a twelve-year-old with troublesome tics is reading about the wrong treatment, and should be told so clearly rather than invited for an assessment.
Surgery is discussed only when tics are severe enough to cause physical injury, unrelenting pain, or a life that cannot be lived — and only when the established treatments have genuinely been tried, at adequate dose and duration, with the coexisting conditions treated alongside.
Targets
| Target | Notes |
|---|---|
| Centromedian thalamic region (CM–Pf) | The most frequently used target internationally; addresses motor and phonic tics |
| Anteromedial globus pallidus internus | Often preferred where obsessive-compulsive features are prominent alongside tics |
| Posteroventral globus pallidus internus | Used where dystonic tics dominate |
| Anterior limb of the internal capsule | Used in a small minority of cases |
There is no single agreed best target. The choice is made from the pattern of symptoms in the individual patient and discussed openly with them, including the fact that the evidence does not yet allow one target to be declared superior.
What the evidence shows
The largest source of outcome data is the International Tourette Syndrome Deep Brain Stimulation Database and Registry, which pools results from centres worldwide rather than from a single group.
| Measure | Result at one year |
|---|---|
| Patients with follow-up data | 171 |
| Overall tic severity (YGTSS total) | Fell from 75.0 to 41.2 — a 45.1% reduction |
| Motor tics | 38.5% reduction |
| Phonic tics | 42.7% reduction |
| Adverse events overall | 35.4% of patients |
| Intracranial haemorrhage | 1.3% |
| Infection | 3.2% |
Martinez-Ramirez D, Jimenez-Shahed J, Leckman JF, et al. Efficacy and safety of deep brain stimulation in Tourette syndrome: the International Tourette Syndrome Deep Brain Stimulation Public Database and Registry. JAMA Neurol 2018;75:353–359. doi:10.1001/jamaneurol.2017.4317
Honest limits
- Tics fluctuate naturally, sometimes dramatically. That makes it genuinely difficult to be certain how much of an individual patient's improvement came from the stimulator — which is why the pooled registry figures matter more than any single success story.
- Obsessive-compulsive symptoms, attention difficulties, anxiety and depression often cause more impairment than the tics themselves, and stimulation aimed at tics does not reliably treat them. They need their own treatment, before and after surgery.
- A one-year reduction of around 45% is a meaningful change in a severely affected person. It is not a return to a tic-free life, and it should not be presented as one.
How the decision is made here
Every candidate is assessed independently by a psychiatrist who is not the operating surgeon, and the case is reviewed by a multidisciplinary board before any operation is offered. A recommendation against surgery is a common and legitimate outcome of that process.
Frequently asked questions
At what age can DBS be considered for Tourette syndrome?
In adults. Tics commonly improve substantially through late adolescence and early adulthood, so operating earlier risks treating a problem that would have settled by itself. Exceptional cases in younger patients are decided by a multidisciplinary board, not by the surgeon alone.
How much do tics improve with DBS?
In the largest international registry, overall tic severity fell by about 45% at one year, with motor tics improving by around 38% and phonic tics by around 43%. Individual results vary.
Does DBS treat the OCD and attention problems that come with Tourette syndrome?
Not reliably. Stimulation aimed at tics may help obsessive-compulsive symptoms in some patients, particularly with pallidal targets, but these conditions need their own treatment and are assessed separately.
Which target is best for Tourette syndrome?
There is no agreed answer. The centromedian thalamic region is the most widely used, and pallidal targets are often chosen where obsessive-compulsive or dystonic features are prominent. The decision is individual and is discussed with the patient.