Repetitive Transcranial Magnetic Stimulation (rTMS)

When depression has not shifted with medication, counselling, or both, it can be exhausting to hear another suggestion. Repetitive transcranial magnetic stimulation (rTMS) is one option some people explore when they need a different path forward. It is not a replacement for being heard, supported, and understood, but for the right person, it may become one meaningful part of a broader treatment plan.

rTMS can sound intimidating because it involves a medical device and magnetic pulses. In practice, it is a non-invasive outpatient treatment that does not involve surgery, sedation, or electrical current being sent through the body. Understanding what it is, what it is not, and where therapy fits can make the decision feel less overwhelming.

What is repetitive transcranial magnetic stimulation (rTMS)?

rTMS uses a small magnetic coil placed against the scalp to deliver carefully targeted magnetic pulses to areas of the brain involved in mood regulation. For depression, treatment often focuses on the left dorsolateral prefrontal cortex, a region associated with thinking, emotional regulation, and motivation.

The pulses are intended to influence activity in the brain networks connected to depression. Researchers are still learning exactly why rTMS helps some people, but the treatment has a substantial evidence base for major depressive disorder, particularly when first-line treatments have not provided enough relief.

You may have also heard of ECT, or “Electroconvulsive Therapy”, but while rTMS and ECT are both advanced neuromodulation therapies, they are different.  ECT, an older neuromodulation therapy, uses an electrical stimulus while a person is under general anesthesia and intentionally induces a brief seizure, while rTMS is performed when you are awake, seated in a chair, and able to return to your usual activities afterward.

When might rTMS be considered?

rTMS is most commonly considered for adults experiencing major depressive disorder who have tried one or more antidepressant medications without sufficient improvement, could not tolerate medication side effects, or prefer to explore an additional evidence-based option. A psychiatrist or other qualified medical provider assesses whether it is appropriate based on your symptoms, treatment history, medical history, and current medications.

Some people experience the benefits of rTMS immediately, for others, it can take more time.  Depression can be shaped by grief, trauma, burnout, chronic stress, relationship strain, isolation, neurodivergence, physical illness, and many other realities. Most people who gravitate toward rTMS have already tried or integrated regular talk therapy into their lives, as well as other behavioural tools and strategies.  A thoughtful assessment matters because the most helpful care plan depends on the whole picture, not only a diagnosis.

Some clinics may also provide rTMS for other conditions under specific protocols or clinical circumstances. The availability and evidence for uses for other disorders, like obsessive-compulsive disorder for example, can vary. If you are considering treatment for anything beyond depression, ask the provider what evidence supports their recommendation and whether the approach is approved or offered through a specialized program.

rTMS is not a measure of how hard you have tried

People sometimes arrive at this point feeling discouraged or ashamed that medication or therapy has not resolved their depression. That feeling is understandable, but it is not a personal failure. Mental health treatment is rarely one-size-fits-all. Finding the right combination can take time, and trying another evidence-based approach may be a sign of persistence and self-care.

What does an rTMS course look like?

Before treatment begins, a medical provider completes a screening and determines the target area and pulse intensity. This may involve measuring a person’s motor threshold, which helps the provider tailor treatment safely to their individual nervous system.

During a session, you sit in a comfortable chair while the coil rests against a specific area of your head. You will hear clicking sounds and may feel tapping or a light knocking sensation on the scalp. Some people find it unusual at first, while others become accustomed to it quickly. You remain awake and can speak with the treatment team if something feels uncomfortable.

A traditional course often involves sessions five days a week for four to six weeks, although schedules and protocols vary by clinic. Sessions may last roughly 20 to 40 minutes. Some forms of treatment, including intermittent theta burst stimulation, can be shorter, but they are not the right fit for everyone.

The time commitment is a real consideration. Daily appointments can be difficult when you are balancing work, caregiving, school, transportation, or low energy. Before starting, ask about appointment times, missed-session policies, travel requirements, and whether your employer or school can offer flexibility. A plan that is clinically sound but impossible to attend consistently may not serve you well. I think we should know what we’re offering and adjust this section before we post this blog​​​***

Benefits, limits, and possible side effects

Many people seek rTMS because it is non-invasive and typically does not cause the systemic side effects sometimes associated with antidepressant medication, such as weight changes, sexual side effects, or emotional blunting. That does not mean it is side-effect free or guaranteed to work.

The most common effects are temporary scalp discomfort, headache, facial muscle twitching during treatment, or fatigue. Adjustments to coil placement or intensity can sometimes improve comfort. Serious side effects are uncommon, but seizures are a known rare risk. This is why a careful screening is essential, especially for people with a history of seizures, certain neurological conditions, implanted medical devices, or metal in or near the head.

Results also vary. Some people notice gradual changes in sleep, energy, concentration, or emotional heaviness before they notice a clear lift in mood. Others do not experience enough improvement to continue, or may need different treatment approaches. Your provider should discuss how progress will be measured, when the plan will be reviewed, and what the next options could be if rTMS is not helping.

It is also worth asking about cost and coverage. In Canada, public coverage and private insurance coverage for rTMS differ by province, program, and insurer. Some hospital-based services have specific eligibility criteria or wait times, while private clinics may offer faster access at an out-of-pocket cost. Clear information about fees, assessment costs, and possible maintenance sessions can help you make an informed decision.

How therapy can support rTMS treatment

rTMS works on brain activity, creating neuroplasticity.  Therapy creates space to understand your experiences, practise new responses, and build support around the changes you want to make. These approaches can work alongside one another rather than competing for the same role.

For example, if depression has made it difficult to leave the house, return calls, or reconnect with people you care about, a lift in energy may create an opening. Therapy can help you use that opening in ways that align with your values, whether that means pacing a return to work, setting boundaries, processing loss, or rebuilding routines without expecting perfection.

Counselling can also offer steadiness during the uncertainty of treatment. It is normal to have hope, doubts, frustration, or pressure to feel better quickly. A therapist can help you notice changes without turning every difficult day into proof that treatment is failing. They can also coordinate, with your consent, with medical providers when collaboration would support your care.

For people who want focused support while considering or undergoing rTMS, even a small number of sessions can be useful. The goal is not to add another obligation to an already full schedule. It is to provide practical, personalized support for the emotional and everyday parts of recovery.

Questions to bring to an rTMS consultation

A good consultation should leave room for your questions. Consider asking what condition the provider is treating, why they believe rTMS fits your circumstances, how many sessions are recommended, and how they will track progress. You may also want to ask about side effects, medication changes, costs, cancellation policies, and what follow-up care looks like after the initial course.

If you are already working with a therapist, you can ask how to integrate the two forms of care. If you are not, consider what support would help you through the process. Depression can make administrative tasks and treatment decisions feel especially heavy. Bringing a trusted person to an appointment, writing down questions in advance, or asking a provider to explain information more than once are all reasonable forms of support.

Choosing a treatment does not require certainty. It requires enough information, safety, and support to take the next step that feels right for you. Whether rTMS becomes part of your care or not, you deserve a plan that recognizes both the biology of depression and the lived experience of carrying it.