TMS can improve depression for months or longer, but symptoms may return with stress or other changes, making follow-up care and relapse planning important.
How long TMS results may last
Transcranial magnetic stimulation (TMS) is usually given as a course of weekday treatment sessions over several weeks. For many people, a course is around 36 sessions spread over six to nine weeks, although the exact plan can vary.
A common question after treatment is: how long will the improvement last? There is no single answer. Some people maintain a meaningful improvement for a long time after completing TMS. Others notice symptoms gradually returning after months or sooner, particularly during periods of stress, changes in sleep, physical illness, medication changes or other disruptions to their usual routine.
TMS is not generally viewed as a permanent cure for depression. Major depressive disorder can be recurrent, and follow-up care is often important whether or not someone has had TMS. The aim is to recognise changes early, protect the progress made during treatment and make a sensible plan if symptoms begin to return.
What “lasting results” can mean
People define a successful result differently. One person may experience a substantial reduction in depressive symptoms and return to work, social activities or daily routines. Another may feel better but still have some symptoms that need ongoing support.
Your clinician may discuss outcomes in terms such as:
- Response, meaning symptoms have improved meaningfully.
- Remission, meaning there are few or no current symptoms of depression.
- Partial response, meaning there has been improvement but further care is still needed.
- Relapse, meaning symptoms return after a period of improvement or remission.
A person who has a partial response may still find TMS worthwhile, but may need a different follow-up plan from someone whose symptoms have fully settled. It is useful to discuss what improvement looks like for you, rather than relying only on a questionnaire score.
Why symptoms can return
A return of depression after TMS does not necessarily mean that treatment failed. Depression often follows a changing course, and factors outside the treatment room can influence wellbeing.
Possible contributors include ongoing anxiety, work or family pressures, grief, isolation, chronic pain, substance use, disrupted sleep, medical conditions and stopping helpful treatments too quickly. Some people also have conditions alongside depression that need continuing attention.
TMS is usually part of a broader mental health plan rather than a stand-alone answer. Depending on the person, this plan may include medication management, talking therapy, regular exercise or activity, sleep support, treatment for alcohol or substance concerns, and help with practical pressures such as housing or work.
If medication was part of your care before or during TMS, do not make changes without speaking to the prescriber who manages it. The end of a TMS course is a good time to clarify who will oversee medicines, therapy and future mental health reviews.
Maintenance TMS: planned follow-up sessions
Some people and clinicians consider maintenance TMS after an initial course. This means treatment sessions are scheduled at intervals after the acute course has ended, with the aim of helping sustain improvement.
There is no single maintenance schedule that suits everyone. A clinic may recommend a gradual reduction in session frequency at the end of treatment, occasional planned sessions, or a watch-and-wait approach with review if symptoms return. The right approach can depend on your history of relapse, how fully you improved, previous treatment experiences, practical travel considerations and insurance arrangements.
Maintenance TMS is not automatically necessary for every person who responds. It is worth asking your treating clinician:
- What signs would suggest I might benefit from maintenance sessions?
- Would follow-up be planned regularly, or only if symptoms return?
- How will we measure whether I am staying well?
- Who should I contact if I notice a decline between appointments?
- Is maintenance TMS covered under my current insurance plan, and does it need separate approval?
Coverage can be particularly important because insurers may have different requirements for an initial TMS course, maintenance care and a later re-treatment course. A recommendation from your clinician does not by itself confirm that a service is covered.
Re-treatment if depression returns
If symptoms return after an earlier positive response to TMS, some people may be considered for another course of treatment. This is often called re-treatment or a repeat course.
The decision is individual. A clinician will usually review how well the first course worked, how long the improvement lasted, what symptoms have returned, whether there have been changes in medication or diagnosis, and whether another form of support is needed as well.
It can help to contact your clinician before symptoms become severe. Early changes can be easier to address than a fully developed depressive episode. If you had TMS in Oregon previously but have moved, changed insurer or changed healthcare provider, ask for copies of relevant treatment records where possible. These may include the original diagnosis, treatment dates, response measures, medication history and discharge plan.
Do not assume that a repeat course will be identical to the first. Your clinician may recommend a similar approach or may adjust the plan based on your current circumstances and treatment history.
Planning follow-up before your final session
The final week of TMS is a practical time to put a follow-up plan in writing. Depression can make it harder to arrange appointments or make decisions when symptoms worsen, so planning while you feel more stable can be useful.
A clear plan may include:
- a follow-up appointment with the TMS provider, psychiatrist, primary care clinician or mental health prescriber;
- arrangements for ongoing therapy, if appropriate;
- a medication review and a named clinician responsible for prescribing;
- a short list of early warning signs that matter to you;
- details of whom to call during office hours and what to do outside those hours;
- agreement about whether maintenance TMS, symptom monitoring or re-treatment may be considered;
- practical notes about transport, work commitments and insurance authorisation if future sessions are needed.
Early warning signs vary. They may include losing interest in usual activities, withdrawing from other people, sleeping much more or less than usual, increased irritability, reduced concentration, missed work, changes in appetite or a growing sense of hopelessness. Family members or trusted friends may notice changes before you do, so consider sharing your plan with someone you trust.
Follow-up care in Oregon
Oregon has a mix of urban and regional TMS services. TMS Therapy Oregon currently lists 39 published clinics, including clinics in Portland, Salem, Bend, Beaverton, Roseburg, Eugene, Ontario, Corvallis, Medford, Oregon City, Tualatin and West Linn.
For people outside the larger metropolitan areas, follow-up planning may need to account for travel time and weather, particularly if maintenance or repeat sessions become necessary. Ask a clinic how it handles reviews after an acute course, whether remote clinical follow-up is available where appropriate, and what arrangements are possible if you cannot attend at short notice.
Insurance questions should be raised early. Plans commonly seen in Oregon include Regence BlueCross BlueShield of Oregon, Providence Health Plan, Kaiser Permanente Northwest, Moda Health, PacificSource, Aetna, Oregon Health Plan through coordinated care organisations, and Medicare. Benefits, referral rules, prior authorisation requirements and network availability can differ between plans and individual policies.
Before committing to maintenance or re-treatment, ask both the clinic and your insurer about eligibility, authorisation and any out-of-pocket responsibility. Keep notes of calls, names, reference numbers and written decisions where available.
When to seek urgent support
TMS follow-up is not a substitute for urgent mental health care. If you are thinking about harming yourself, feel unable to keep yourself safe, or are concerned about someone else’s immediate safety, seek urgent help through emergency services or a local crisis service.
For less immediate but concerning deterioration, contact your treating clinician, primary care provider or mental health prescriber promptly. You do not need to wait until symptoms are at their worst before asking for support.
Getting help in Oregon
Use the TMS Therapy Oregon clinic listings to look for local providers and ask about post-treatment reviews, maintenance options and re-treatment pathways. The directory’s insurance guide can help you prepare questions about coverage, and the contact page is available if you need help using the directory.
This is educational information, not medical advice.
This page is informational and is not medical advice.