TMS Therapy
Transcranial Magnetic Stimulation-a non-invasive brain stimulation treatment used for depression that has not responded to medication.
Learn about Transcranial Magnetic Stimulation (TMS) therapy-how it works, who it helps, and what the research shows for depression and OCD treatment.
What Is TMS?
Transcranial Magnetic Stimulation (TMS) is a non-invasive procedure that uses magnetic pulses delivered through a coil placed against the scalp to stimulate cortical brain regions involved in mood regulation. TMS systems are regulated as medical devices: individual devices receive FDA clearance or authorization for specific indications, beginning with major depressive disorder in 2008. There is no single blanket "FDA-approved TMS" - clearance always belongs to a particular device for a particular use.
Most depression protocols target the dorsolateral prefrontal cortex, a region frequently reported to show altered activity and connectivity in depression. It is more accurate to say TMS modulates activity in mood-related circuits than to say it repairs an underactive region or restores normal activity, which is a simplification the research does not support.
The pulses do not require anesthesia or sedation, and treatment is delivered in supervised outpatient settings.
How TMS Is Delivered
Several device families and protocols exist. They are not interchangeable: each has its own cleared indications, evidence base and session structure, and a clinician selects among them.
- Repetitive TMS (rTMS): The most established form, delivered in a series of outpatient sessions over several weeks
- Deep TMS: Uses a differently shaped coil intended to influence broader cortical volumes; specific systems carry clearances for indications including depression and OCD
- Theta burst stimulation (TBS): A patterned protocol that shortens session length, cleared on specific systems for depression
- Accelerated protocols such as Stanford Neuromodulation Therapy (SNT): Multiple imaging-guided sessions per day compressed into days rather than weeks, available on specific cleared systems
- Indications beyond depression: Certain devices are additionally cleared for OCD, smoking cessation, depression with comorbid anxiety, and, more recently, adjunctive use in adolescents
Who TMS Is Considered For
TMS is generally considered for adults with major depressive disorder who have not improved enough with antidepressant medication. Across trials and real-world registries, a meaningful share of people improve and a smaller share reach remission, but reported rates vary widely with the population studied, the device and protocol used, prior treatment history, and how response is defined - so single headline percentages are not reliable guides to an individual outcome.
Some devices are also cleared for OCD and other indications, and TMS is being studied in PTSD, chronic pain and substance use, where evidence remains preliminary. Whether TMS is appropriate for you, and which protocol, is a decision for a qualified clinician after evaluation. This page does not include stimulation settings, motor-threshold procedures or coil-positioning instructions, which are clinical parameters set by trained providers.
What to Expect During Treatment
Course length varies by device and protocol - conventional depression courses typically run daily on weekdays for several weeks, while accelerated protocols compress treatment into a much shorter window. Your provider will explain the schedule for the system they use.
You sit in a chair while the coil is positioned on your head. You will hear clicking sounds and feel tapping on the scalp. No anesthesia is used and most people drive themselves home and continue normal activities. The most common side effects are headache and scalp discomfort at the treatment site, which often ease after the first sessions. Seizure is a rare risk, which is why screening and supervised delivery matter.
Research, Durability and Coverage
Randomized trials and meta-analyses support TMS for depression that has not responded to medication, and accelerated imaging-guided protocols such as SNT reported high remission rates in small early trials - findings that are promising but come from small samples and are still being replicated in larger and more varied populations. Treat any single striking percentage as one trial result rather than an expected outcome.
Benefit can persist for months after a course, and some people relapse or need additional treatment; durability data continue to accumulate and vary by protocol. Insurance coverage for depression is now common in the United States but is not universal, and criteria such as documented medication trials differ by insurer and plan - verify with your own plan.
For how TMS relates to plasticity mechanisms, and what that research does and does not establish, see our detailed review of ketamine, TMS and psychedelics.
Frequently asked questions
Is TMS therapy painful?
TMS is generally well-tolerated. Most people feel a tapping or clicking sensation on the scalp during treatment. Some experience mild headache or scalp discomfort, particularly in the first sessions, which often eases with time. No anesthesia or sedation is required.
How long do TMS results last?
Some studies report benefit persisting for a year or more after a course, while other people relapse sooner and may be offered additional or maintenance treatment. Durability varies by individual, protocol and what else is in the treatment plan, and long-term research is ongoing.
Can TMS be combined with medication?
Yes. TMS is often used alongside antidepressant medication, and it is not a reason to start or stop any medication on your own. Your prescriber decides how treatments are combined for your situation.
Is TMS covered by insurance?
Many major insurers in the United States cover TMS for depression that has not responded to medication, usually with documentation requirements such as prior medication trials. Coverage is not guaranteed and criteria vary by insurer, plan and device, so confirm with your plan before starting.
Related on Beiing
- Depression Symptoms - Understanding the condition TMS is used for
- Ketamine, TMS & Psychedelics: What the Plasticity Evidence Shows - Mechanism and evidence review, including regulatory status
- Ketamine Therapy - Another option for treatment-resistant depression
- Therapy Options - Compare treatment approaches
Sources
- Brain Stimulation Therapies - National Institute of Mental Health
- Stanford Neuromodulation Therapy (SNT): A Double-Blind Randomized Controlled Trial - Cole et al., American Journal of Psychiatry, 2022 - American Psychiatric Association Publishing
Written by Beiing Editorial Team · Editorially reviewed by Beiing Editorial & Research Review · Published · Last reviewed . Editorial and research review by Beiing writers and researchers. This is not medical or clinical review, and no clinician signs off on our content.
Educational content only - not medical advice. In a crisis, call or text 988 (US) or your local emergency number. See crisis resources.