Transcranial magnetic stimulation (TMS) uses focused magnetic pulses to stimulate nerve cells in brain regions associated with depression. It is a noninvasive treatment that does not require surgery or general anesthesia. TMS devices are FDA-cleared for major depressive disorder and have been used in clinical settings for eligible patients.
Treatment involves repeated sessions under medical supervision. This guide explains how TMS works, who may qualify, what a first appointment involves, and what clinical evidence shows. Each part of treatment can be discussed with a qualified medical professional before therapy begins. Keep reading to understand what TMS treatment may involve.
Key Takeaways
- TMS is a noninvasive treatment that uses magnetic fields to stimulate brain areas involved in mood regulation.
- It may be considered when depression does not improve enough with medication or therapy.
- TMS can improve symptoms for some people with major depressive disorder, but results vary.
How Does TMS Work?
The basic process is fairly direct. A treatment coil is placed against the scalp over a selected area of the brain.
The coil sends short magnetic pulses through the skull. These pulses create electrical activity in nearby nerve tissue. Repeated sessions may change activity in brain networks linked with mood and emotional regulation.
Clinical researchers have not yet established a single mechanism of action for transcranial magnetic stimulation. Instead, medical data points to several simultaneous neurobiological processes, including localized cortical modulation, enhanced synaptic connectivity between neural networks, and long-term neuroplasticity.
The treatment target matters too. For depression, clinicians often focus on the dorsolateral prefrontal cortex, which is involved in attention, planning, and emotional regulation.
That does not mean depression is caused by one brain region. Depression involves several brain systems, along with psychological, social, and physical factors.
What Happens During A TMS Session?
A patient usually sits in a treatment chair while the clinician positions the coil against the scalp. The device then delivers a series of magnetic pulses.
The sound is noticeable. Each pulse can produce a clicking noise, and the patient may feel tapping around the treatment area.
Some patients report scalp discomfort, facial muscle movement, or a headache. These effects may be more noticeable during early sessions and should be reported to the clinical team if they become difficult to tolerate.
No anesthesia is required for standard treatment.
“TMS uses magnetic stimulation without intentionally producing a seizure, unlike ECT, which produces a controlled therapeutic seizure and requires anesthesia.” – FDA
The patient remains awake and can communicate with the clinical team during treatment. The exact session length depends on the device and protocol.
Who May Qualify For TMS Treatment?
TMS candidacy depends on the patient’s diagnosis, previous treatment, current symptoms, medical history, and the indication for the FDA cleared device being considered. The clinical team must also check for safety concerns before treatment begins.
A clinician will often review previous antidepressant treatment in detail. The review can include the medication name, dose, length of treatment, response, side effects, and whether the medication was taken as prescribed.
Psychotherapy history may also be reviewed. Other psychiatric diagnoses, neurological conditions, medications, and implanted medical devices can affect treatment planning.
What Are The TMS Candidacy Criteria?
TMS candidacy criteria vary by device and clinical situation. There is no single checklist that determines eligibility for every patient.
For instance, the NeuroStar Advanced Therapy System carries an FDA-cleared indication for treating major depressive disorder in adult patients who have experienced an inadequate clinical response to prior pharmacological interventions during their current depressive episode.
Patients considering treatment can also review Embracing Life Today’s mental health and TMS services to understand the types of psychiatric and TMS care offered by the practice.
A clinical review may include:
- Current depression diagnosis
- Previous antidepressant treatment
- Response to medication
- Medication related side effects
- Current psychiatric treatment
- Neurological history
- Seizure history
- Implanted medical devices
- Metal near the head
The clinician may also use a symptom scale such as the PHQ 9 or MADRS. These measures can provide a starting point and help track changes during treatment.
Pre-treatment screening is a critical medical safety evaluation. High-intensity magnetic fields can physically interact with ferromagnetic metallic implants or active implantable electronic devices, requiring the psychiatric care team to verify comprehensive patient records before administering the first stimulation pulse.
A history of seizures also needs review. The risk is considered low, but seizure is a recognized potential adverse event associated with TMS.
Can TMS Be Used With Antidepressants?
TMS may be used while a patient continues antidepressant medication, depending on the clinical plan. Medication changes should be managed by the prescribing clinician.
“Active TMS combined with antidepressants showed greater short term efficacy than sham TMS combined with the same antidepressants.” – PubMed, 2024
That finding does not mean every patient needs both treatments. It also does not mean an antidepressant should be stopped before TMS.
Medication decisions require clinical supervision. Abruptly stopping an antidepressant can cause withdrawal symptoms or a return of depression symptoms.
What Happens At The First TMS Appointment?
The first TMS appointment usually includes a medical review, safety screening, treatment planning, and setup of the treatment settings. The patient stays awake during the visit.
The clinician will first review the patient’s depression history. Previous medications, therapy, symptom changes, and side effects may all be discussed.
Medical history matters too. The clinical team may ask about seizures, implanted medical devices, metal near the head, current medications, and other neurological conditions.
A depression rating scale may also be used. It gives the clinician a starting point and makes it easier to compare symptoms during later visits.
Next, the clinician identifies the treatment area and places the coil in the correct position. Some devices also require a motor threshold measurement before treatment begins.
The first visit can take more time than later visits. There is more setup to do. Patients preparing for an appointment can also review Embracing Life Today’s Florida TMS treatment locations to see where in person care is available.
How Does TMS Compare With Medication?
TMS versus medication involves two different ways of treating depression. Antidepressants work after the patient takes a medication, while TMS uses magnetic stimulation aimed at a selected area of the brain.
Antidepressants remain an important treatment for depression. Some patients respond well to them. Others may have limited improvement or develop side effects that make treatment difficult.
TMS offers another option for patients who meet the clinical requirements. It does not automatically mean that antidepressant medication must stop.
A 2024 systematic review looked at 10 randomized controlled trials with 654 participants. The researchers found greater short term efficacy when active TMS was combined with antidepressant treatment than when sham TMS was combined with the same antidepressant treatment.
That result does not mean every patient needs both treatments. Treatment plans still need to be based on the patient’s medical history.
Medication should not be stopped without guidance from the prescribing clinician. Sudden changes can cause withdrawal symptoms or allow depression symptoms to return.
| Treatment | Main method | Anesthesia |
| TMS | Magnetic stimulation | No |
| Medication | Drug treatment | No |
| ECT | Electrical brain stimulation | Yes |
The choice between these treatments is not always obvious. A psychiatrist may review previous medications, side effects, symptom severity, medical conditions, and other treatment options before making a recommendation.
Does TMS Work For Depression?
TMS can reduce depression symptoms in some patients with major depressive disorder, but it does not guarantee a response or remission. Research supports its use for selected patients, although results vary.
A 2024 systematic review examined deep TMS for treatment resistant depression. The review included five randomized controlled trials with 507 patients. The response rate was 45.3 percent with active treatment and 24.2 percent in the control group. Remission occurred in 38.3 percent of patients receiving active treatment and 14.4 percent of patients in the control group.
Those numbers describe the people included in that research. They cannot predict what will happen to one particular patient.
Another 2024 meta analysis looked at repetitive TMS for major depressive disorder without psychotic features. The researchers found that TMS was linked with lower depression scores in the studies reviewed. Results varied between treatment approaches, though.
That difference matters. Treatment response can depend on several clinical factors, including the type of depression, previous treatment, stimulation settings, and treatment schedule.
Researchers are also studying brain imaging, EEG findings, and other biological markers. The hope is to better understand why some patients respond while others do not. These methods are still being studied and cannot reliably predict an individual outcome.
Treatment cost can vary. Insurance coverage, the number of sessions, the treatment center, and the selected treatment protocol can all affect the final cost, so patients should ask the clinic and insurance provider about the expected range.
For additional information about depression care, Embracing Life Today’s Major Depression treatment services outline its approach to evaluation and treatment.
Why Shouldn’t You Expect the Same TMS Result?
TMS doesn’t produce the same response for everyone because treatment protocols, depression severity, treatment history, and individual biology can differ. Previous medication response, adherence, stimulation settings, and session schedules may also affect outcomes. The reality is simple, one clinical trial result can’t predict exactly what you’ll experience.
At Embracing Life Today, treatment decisions can focus on your symptoms, treatment history, safety, and realistic expectations instead of promising a specific result. If you’re considering TMS for depression, Embracing Life Today provides psychiatric care and information about FDA-cleared NeuroStar TMS Therapy in Florida.
If you or someone you know is in distress or experiencing a mental health crisis, please call or text 988 to reach the Suicide & Crisis Lifeline for free, confidential, 24/7 support.
FAQs
Is TMS FDA Cleared For Depression?
Yes, TMS devices have FDA clearance for specific depression indications. The FDA permitted marketing of TMS for major depression in 2008, and later cleared additional devices and uses.
The clearance applies to specific devices and indications. It does not mean every device has the same labeling.
What Is The First TMS Appointment Like?
The first TMS appointment usually includes a clinical review, safety screening, treatment planning, and setup of stimulation settings. The patient remains awake during the appointment.
The clinician may review previous antidepressant treatment and current symptoms. Medical history is also checked before stimulation begins.
Is TMS Painful?
TMS can cause scalp tapping, pressure, or discomfort during stimulation, although the experience varies between patients. Headache and scalp discomfort are recognized treatment related effects.
The treatment team can monitor symptoms during the session. Persistent or severe discomfort should be reported to the treating clinician.
How Many TMS Sessions Are Needed?
The number of TMS sessions depends on the device and treatment protocol. Standard treatment plans often use repeated outpatient sessions across several weeks, while newer protocols may use a different schedule.
The exact number should be determined by the treating clinician. A patient should not assume that one fixed number of sessions will apply to every treatment plan.
Is TMS Better Than Medication?
TMS is not automatically better than medication because both treatments have different uses, risks, and clinical considerations. Research supports TMS for selected patients, while antidepressant medication remains an important treatment option.
Some patients receive both treatments. A 2024 meta analysis found greater short term efficacy with combined TMS and antidepressant treatment than with sham treatment combined with the same antidepressants in the studies reviewed.
References
- https://www.fda.gov/medical-devices/guidance-documents-medical-devices-and-radiation-emitting-products/repetitive-transcranial-magnetic-stimulation-rtms-systems-class-ii-special-controls-guidance
- https://pubmed.ncbi.nlm.nih.gov/38740269/
