By the Clinical Team at Insight Therapy & Wellness | October 23, 2026
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TMS usually doesn’t hurt, though most people feel a tapping sensation on their scalp during treatment. Some notice mild discomfort or a headache in the first few sessions, which often eases as they get used to it. You stay awake the whole time, no anesthesia is needed, and most people return to their normal day right after.
TL;DR / Key Takeaways
TMS is non-invasive and doesn’t require sedation or recovery time. The tapping sensation on the scalp is the most commonly reported experience, and headaches in the first few sessions are normal but tend to fade. Most people drive themselves to and from appointments and go straight back to work or daily life afterward. A standard course runs around thirty to thirty-six sessions over six to seven weeks, and many people start noticing mood changes somewhere in the middle of treatment.
Table of Contents
- What is TMS therapy, and how does it work?
- What happens during a typical TMS session?
- Are there side effects after TMS?
- How many sessions will I need?
- Can I drive and go back to work after a session?
- How soon might I notice changes in my mood?
- Who is a good candidate for TMS?
- FAQ
- About Insight Therapy & Wellness
What is TMS therapy, and how does it work?
TMS stands for Transcranial Magnetic Stimulation. It’s a non-invasive treatment that uses brief magnetic pulses to stimulate nerve cells in specific areas of the brain involved in mood regulation. The coil delivering the pulses is placed against the scalp, and no surgery, needles, or anesthesia are involved.
The area most commonly targeted in TMS for depression is the left dorsolateral prefrontal cortex, a region that tends to show reduced activity in people with depression. The magnetic pulses work by inducing small electrical currents in the neurons of that area, which over a course of treatment appears to normalize activity levels and improve communication within the brain’s mood-regulating circuits.
Research published in PMC examining the mechanisms and clinical outcomes of TMS found it to be an effective treatment for major depression, particularly for people who haven’t responded adequately to antidepressant medication. TMS received FDA clearance for treatment-resistant depression in 2008 and has since been used widely as a first-line or adjunctive treatment option.
What happens during a typical TMS session?
You sit in a reclining chair, fully awake and clothed. A technician or clinician places the TMS coil against a specific location on your scalp, which is measured and mapped carefully in your first session to ensure accurate placement each time.
Once the coil is positioned, the pulses begin. You’ll hear a clicking or tapping sound, and feel a corresponding tapping sensation on your scalp where the coil is placed. Some people describe it as a light knocking or a woodpecker-like rhythm against their head. The sensation is localized to the scalp and doesn’t feel like anything happening inside the brain itself.
Sessions typically run between twenty and forty minutes depending on the protocol. You can listen to music, watch something, or simply sit. Some people read. The room is quiet, the chair is comfortable, and there’s nothing you need to actively do. When the session ends, you gather your things and go.
Are there side effects after TMS?
The most common side effect is a headache or scalp discomfort, particularly in the first week of treatment. This happens because the muscles of the scalp are being stimulated along with the brain tissue beneath, and those muscles aren’t used to it. Over the first several sessions, most people find the discomfort decreases as their scalp adapts.
Over-the-counter pain relievers like ibuprofen are typically sufficient for post-session headaches, and many people find they don’t need anything by the second or third week.
Less commonly, some people feel lightheadedness immediately after a session, which passes quickly. Twitching or tingling in the face or jaw during treatment can occur depending on the coil placement and resolves when the session ends.
The most serious potential side effect of TMS is a seizure, but this is rare and more likely in people with pre-existing seizure risk factors. A thorough medical intake before starting TMS is designed specifically to identify those risk factors and ensure the treatment is appropriate for you.
TMS does not cause memory loss, cognitive impairment, or the systemic side effects associated with antidepressant medications.
How many sessions will I need?
A standard course of TMS for depression consists of thirty to thirty-six sessions, usually delivered five days a week over six to seven weeks. This protocol reflects what the research has established as the treatment duration needed for durable results, and it’s the schedule used in the clinical trials that supported FDA clearance.
Some providers offer accelerated protocols, like Theta Burst Stimulation, which can deliver equivalent stimulation in a shorter session and may allow more sessions per day. These are worth asking about if the standard schedule is difficult to fit around work or other commitments.
After completing an initial course, some people benefit from maintenance sessions at lower frequency to sustain the gains. Whether that’s recommended depends on your response to treatment and your history with depression.
Can I drive and go back to work after a session?
Yes, for most people. TMS doesn’t involve sedation, doesn’t affect your reaction time, and doesn’t produce cognitive effects that impair functioning. The typical experience after a session is that you feel normal, perhaps a little tired or with mild scalp sensitivity, and fully capable of driving and returning to whatever your day holds.
This is one of the practical advantages of TMS over treatments like electroconvulsive therapy, which require anesthesia and a recovery period, or ketamine infusions, which involve a monitoring period before you can leave. With TMS, the appointment ends and you go. Many people schedule sessions before work or during a lunch break and don’t need to disrupt their routine beyond the time of the appointment itself.
How soon might I notice changes in my mood?
Most people who respond to TMS begin noticing changes somewhere between the second and fourth week of treatment, which is roughly the halfway point of a standard course. The changes often appear gradually rather than as a sudden shift: a slightly lighter feeling, a moment that’s easier to get through than it would have been before, or feedback from people around you that you seem different before you quite feel it yourself.
Some people don’t notice changes until after the full course is complete. This is consistent with how TMS works: it’s not producing an immediate pharmacological effect but gradually reshaping the activity patterns in brain circuits over time, and that kind of neurological change tends to build rather than arrive all at once.
If you’re also working with a therapist for depression during TMS treatment, the combination tends to support better outcomes than either approach alone. TMS can open a window in which the brain is more responsive, and therapy gives you tools to work with that responsiveness.
Who is a good candidate for TMS?
TMS is most commonly recommended for adults with major depressive disorder who have tried one or more antidepressant medications without adequate improvement, or who haven’t been able to tolerate medication side effects. It’s also used for people who prefer not to take medication or who want an adjunctive option alongside their existing treatment.
People with metal implants in or around the head, including cochlear implants or certain types of aneurysm clips, are not candidates for TMS because of the magnetic field involved. A detailed screening process before starting treatment identifies any contraindications.
Pregnancy, a history of seizures, and certain other medical conditions may affect eligibility and are discussed during intake. Beyond those medical considerations, TMS is appropriate for a broad range of adults, including those who are otherwise healthy but have found depression resistant to standard treatment.
FAQ
Is TMS safe?
Yes. TMS has been in clinical use since FDA clearance in 2008 and has a well-established safety profile. The most common side effects are mild and temporary. Seizure is a rare risk, and thorough screening before treatment identifies the people for whom that risk is elevated. There are no known long-term adverse effects associated with TMS.
How long does each TMS session take?
A standard session runs approximately twenty to forty minutes depending on the protocol being used. Theta Burst Stimulation protocols can be completed in three to five minutes per session. Your provider will tell you exactly what to expect for the specific protocol they’re recommending.
Can I take my medication while doing TMS?
In most cases, yes. TMS is often used alongside antidepressant medication, and the two are not generally contraindicated. Some medications can lower seizure threshold, which is something your provider will review during the intake process. It’s important to give your treatment team a complete list of what you’re taking so they can assess it before starting.
Is TMS covered by insurance?
TMS is covered by many commercial insurance plans and Medicare for treatment-resistant depression, typically requiring documentation that at least one antidepressant trial failed. Coverage requirements vary by plan, and prior authorization is usually needed. A good TMS provider will help you navigate the verification process before treatment begins so you know what to expect.
About Insight Therapy & Wellness
Insight Therapy and Wellness offers TMS as part of a whole-person approach to treating depression, often alongside medication management and therapy. Our team walks you through every step before your first session, explains what you’ll feel, and checks in throughout treatment so you never feel unsure about what’s happening. We want TMS to feel approachable, comfortable, and connected to the rest of your care.
If you’re curious about TMS but nervous about what to expect, Insight Therapy and Wellness can answer your questions and help you decide if it’s right for you. Schedule a free consultation to learn more.