Maybe you’ve read that TMS helps when antidepressants haven’t, and you want to know if that could include you. Or maybe you already tried TMS somewhere else, it didn’t do much, and now you’re wondering whether that was your one shot.
It wasn’t. TMS isn’t a single, fixed treatment. There are several ways to deliver it, and the timeline, the protocol, and how long relief holds can all look different from one person to the next. Here’s what each of those pieces actually means, in plain language. As always, it’s general information, and the details of your own care belong in a conversation with a provider.
When does transcranial magnetic stimulation (TMS) work?
TMS therapy (transcranial magnetic stimulation) is an FDA-cleared depression treatment for adults with depression who haven’t gotten meaningful relief from oral antidepressants. It can be used to treat major depressive disorder, especially when traditional antidepressant medication has not helped.. A coil rests against your head and sends gentle magnetic pulses to the areas that help regulate mood and energy. You’re awake the whole time, sitting in a comfortable chair, and you can drive yourself home afterward.
A standard course of treatment runs five days a week for about six weeks, often with a short taper at the end. Sessions at Oasis take about 20 minutes. Because the pulses work locally, there are no systemic side effects like weight gain or emotional numbness. Some people get mild scalp discomfort or a headache early on, and that usually settles as treatment continues.
So when does it start working? Most people don’t feel much in the first week or two, and that’s normal. Depressive symptoms often begin to ease somewhere around weeks two to four, with the fullest effect around week six. In large real-world data covering thousands of patients, somewhere between about half and more than three-quarters responded, depending on how response was measured. That’s real, and it also means TMS doesn’t land for everyone the first time, which brings us to protocols.
How many TMS protocols are there for major depressive disorder?
More than most people realize. There isn’t one official count, because providers can adjust where the pulses go andhow fast they fire.. For major depressive disorder, major depression means symptoms that last at least two weeks under the Diagnostic and Statistical Manual threshold, while persistent depressive disorder is a chronic form that lasts at least two years in adults. But the main FDA-cleared approaches fall into a different families:
- Standard repetitive TMS (rTMS): the original approach, cleared in 2008, when TMS therapy was FDA approved for depression. Steady pulses, usually aimed at the left front side of the brain, over sessions that run roughly 20 to 40 minutes.
- Theta burst stimulation: delivers pulses in short, rapid bursts. A large trial found it worked about as well as standard rTMS, in a session that can take just a few minutes, and MagVenture received FDA clearance for a 3-minute TMS protocol in 2018.
- Deep TMS: uses deep transcranial magnetic stimulation with a different coil shape (an H-coil) that reaches a broader and somewhat deeper area.
- Accelerated protocols: pack many short sessions into each day over about a week, instead of spreading treatment across six weeks.
TMS may also come up in discussions of depression within bipolar disorder, which involves alternating periods of depression and mania.
On top of that, providers can choose the target, and deep TMS has also received FDA clearance for obsessive compulsive disorder. TMS is one option used to treat depression when other approaches, including medication or talk therapy, haven’t provided enough relief. Some protocols stimulate the left side, some use slower pulses on the right side, and some treat both. The intensity is set for your brain specifically, based on a quick measurement at your first visit.
Why does that matter? Because everyone’s brain is different. Depression is not one single presentation and can include seasonal affective disorder, which typically shows up during fall and winter. A protocol that works beautifully for one person may need adjusting for someone else, and that’s a reason to look at the plan, not a reason to give up on TMS.
How long does TMS depression treatment last?
Unlike a daily pill, TMS isn’t something you take forever. You finish a course, and for a lot of people the relief keeps going after the sessions stop.
In a study that followed patients for a full year after treatment, roughly six in ten who responded to TMS were still doing well twelve months later. Some people stay steady for longer than that. Others notice the heavy days creeping back after a while. A depressive episode can return after stressful life events or a traumatic event.
If that happens, it isn’t a failure, and you don’t necessarily start from zero. Providers often use a handful of “booster” or maintenance sessions to get things back on track, and people who responded once tend to respond again. It helps to keep an eye on early signs, since stress can show up around the same time as anxiety, sleep changing, or motivation slipping, and check in with your care team sooner rather than later. Job loss or divorce are the kinds of life events that can have a major impact on recurrence risk.
What if TMS didn’t work for your treatment resistant depression before?
That’s a heavy thing to carry, especially when you went in wanting it to work. While sadness or feeling sad after a disappointment can be part of life, a depressive disorder is different, can affect emotions, thoughts, behavior, relationships, and everyday functioning rather than mood alone, and may call for other appropriate treatment options.
It’s possible you needed a different protocol, a different target, a different intensity, or more sessions than you got, ; and that’s ok. Sometimes a course was cut short, or the plan was more one-size-fits-all than your brain needed, and negative patterns in thinking, along with negative experiences, can also shape how depression shows up and whether a different approach may help.
At Oasis, your care plan is built around you: your medical history, relevant mental health conditions or mental disorders you’ve dealt with, including related concerns like anxiety, and symptom patterns such as low mood, changes in self esteem, or increased appetite, what you’ve already tried, and how you respond as treatment goes on, with adjustments along the way. If you’ve had TMS before, bring whatever details you have to your consultation. They help us see what might be worth doing differently, especially if severe depression may need a different level or combination of care than milder cases, whether that includes talk therapy, medication, or group therapy, which can help people share coping strategies with others facing similar symptoms.
Whenever you’re ready
You don’t have to know which protocol is right for you. That’s what the first conversation is for. Book a free, no-commitment consultation with Oasis, and we’ll verify your insurance coverage for you so there’s nothing to sort out on your own. TMS is covered by most major insurance plans, though benefits vary by plan and medical history.
Depression can also show up at different life stages, including around pregnancy, after childbirth, or during the menstrual cycle. Perinatal depression includes depression during pregnancy and after birth, and postpartum depression is more severe than the baby blues, can last up to a year after childbirth, and is different from the brief mood swings and anxiety that often start a few days after delivery and ease within about two weeks. Premenstrual dysphoric disorder is a severe form of premenstrual syndrome, though some reviews note it was a provisional DSM-IV category and not purely depressive, and its symptoms typically improve once the period begins.
If you’re having suicidal thoughts or thinking about harming yourself, call or text 988 to reach the Suicide & Crisis Lifeline, any time of day.
Results may vary. Individual results are not guaranteed. This article is general information and isn’t a substitute for advice from your healthcare provider.
Sources
- National Institute of Mental Health: Brain Stimulation Therapies: what TMS is, how it’s delivered, side effects
- Mayo Clinic: Transcranial magnetic stimulation: course length, what sessions feel like
- Blumberger et al., The Lancet (2018), THREE-D trial: theta burst compared with standard rTMS
- Cole et al., American Journal of Psychiatry (2022): accelerated TMS protocol
- Sackeim et al., Journal of Affective Disorders (2020): real-world outcomes registry, response rates
- Dunner et al., Journal of Clinical Psychiatry (2014): one-year durability of TMS response
- 988 Suicide & Crisis Lifeline
