TMS can improve depression for varying lengths of time, and follow-up care helps monitor for relapse and consider maintenance sessions or repeat treatment when needed.
How Long Do TMS Results Last? A New Hampshire Guide to Follow-Up Care
Transcranial magnetic stimulation (TMS) is usually provided as a course of outpatient treatment for depression. A standard course often involves weekday appointments over six to nine weeks, commonly totalling around 36 sessions. For people who respond, an important next question is what happens after the final session: how long might the benefit last, what if symptoms return, and is further TMS available?
There is no single answer that applies to everyone. Some people experience a sustained improvement after one course, while others notice symptoms gradually returning and may need additional support. Depression can be recurrent, and TMS is usually considered one part of a broader treatment plan rather than a permanent guarantee against future episodes.
Follow-up care can help patients and clinicians recognise changes early, make practical plans for relapse prevention and discuss whether maintenance sessions or re-treatment may be appropriate.
Understanding durability after TMS
A “response” to TMS generally means that depression symptoms have improved meaningfully during the treatment course. Some people may also reach remission, meaning their symptoms reduce to a level where they are no longer causing significant day-to-day difficulty.
How long that improvement lasts can depend on many factors, including:
- How severe and longstanding the depression was before treatment
- Whether symptoms have returned after previous treatments
- Other mental health conditions, including anxiety
- Ongoing medicines, talking therapy and lifestyle support
- Major life events, stress, illness or changes in sleep
- Whether a person completes the recommended TMS course
- The follow-up plan agreed with their treating clinician
TMS was cleared by the FDA for major depressive disorder in 2008, and for depression with comorbid anxiety in 2021. It is not a cure for every cause of low mood, and it does not remove the need to monitor mental health after treatment ends.
It can be helpful to think of the end of a TMS course as a transition point rather than a finish line. The immediate improvement may continue to settle over the following weeks. At the same time, patients and their care teams can begin focusing on how to maintain progress.
Relapse does not mean treatment has failed
Depression symptoms can return after a successful course of TMS. This is often called relapse when symptoms return after a period of improvement or remission. A return of symptoms does not necessarily mean that TMS did not work, nor does it mean a person has done anything wrong.
Depression commonly follows a fluctuating course. Someone may have a period of stable wellbeing and later experience new symptoms during a stressful time, after a medication change or without an obvious trigger.
Early signs can vary from person to person, but may include:
- Sleep becoming more disrupted
- Loss of interest in usual activities
- Reduced energy or motivation
- Increasing social withdrawal
- More frequent negative thoughts
- Difficulty concentrating
- Changes in appetite or daily routine
- Anxiety becoming more persistent
It is useful to identify a person’s own early warning signs before treatment concludes. Some people find it helpful to keep a brief mood record, use a symptom questionnaire recommended by their clinician, or ask a family member or trusted friend to mention changes they notice.
If symptoms begin returning, contacting the prescribing clinician, GP, psychiatrist or TMS provider promptly may allow for a calmer discussion of options. It is usually easier to review a gradual change than to wait until symptoms have become severe.
Maintenance TMS and re-treatment
The terms “maintenance TMS” and “re-treatment” are sometimes used interchangeably, but they can describe different approaches.
Maintenance TMS generally refers to planned sessions after the main course has finished. These sessions may be spaced further apart than the original weekday programme. The purpose is to support ongoing stability for someone considered at higher risk of symptoms returning.
Re-treatment, sometimes called a repeat course or booster treatment, usually refers to additional TMS when depression symptoms have returned after a previous response. The number and timing of sessions can vary. A clinician may recommend a shorter series of sessions, a further full course or another treatment approach depending on the person’s symptoms and history.
There is no universal maintenance schedule. Some people do not need further TMS after their initial course. Others may benefit from planned follow-up sessions or may choose to return for assessment if symptoms recur. The most appropriate plan should be based on clinical need, previous response and practical considerations such as travel, work and family commitments.
Before agreeing to maintenance or re-treatment, ask the provider:
- What is the aim of these sessions: prevention, early intervention or treatment of a relapse?
- How will progress be monitored?
- What symptoms should prompt me to contact the clinic sooner?
- Will my current medicines or therapy be reviewed?
- What are the likely out-of-pocket costs, if any?
- Does my insurance plan require prior authorisation or a new referral?
- Who should I contact between appointments if my mental health worsens?
Planning follow-up before the last session
A useful follow-up plan is practical, written down where possible and shared with the professionals involved in a person’s care. This may include the TMS clinic, psychiatrist, GP, therapist and prescribing clinician.
A plan may cover regular review appointments, medication management, ongoing psychological therapy and steps to take if symptoms return. It should also clarify whether the TMS provider offers maintenance care, follow-up assessments or re-treatment.
If you are taking antidepressant or other psychiatric medication, do not stop or change it simply because TMS has been helpful unless the clinician who prescribes it advises you to do so. Some people continue their existing treatment after TMS, while others may review it over time with their prescriber.
It may also help to plan for ordinary routines that support recovery. This can include sleep consistency, meals, movement, social contact, therapy appointments and reducing avoidable stress where possible. These measures do not replace medical care, but they can form part of a realistic relapse-prevention plan.
TMS is generally well tolerated. Common side effects during treatment include scalp discomfort and headache. Seizure is rare. If a repeat course is being considered, discuss any changes in your health, medicines or seizure risk with the treating team.
Insurance and practical questions in New Hampshire
Coverage for TMS, maintenance treatment and repeat courses can differ between plans. Even when an initial course is covered, the requirements for further treatment may not be the same. It is sensible to check with both the clinic and your insurer before arranging care.
Insurance carriers commonly seen in New Hampshire include Anthem Blue Cross Blue Shield New Hampshire, Harvard Pilgrim Health Care, Cigna, Aetna, UnitedHealthcare, NH Medicaid through Medicaid Care Management, Medicare including Advantage plans, and TRICARE East.
Questions to ask include whether your plan covers TMS for your diagnosis, whether prior authorisation is needed, whether a referring clinician must provide records, and whether maintenance or re-treatment is reviewed separately. Ask about in-network status and any copayments, deductibles or travel considerations as well.
New Hampshire’s geography can matter when planning follow-up. The directory currently lists 29 published TMS clinics, including listings in Manchester, Derry, Nashua, Salem, Dover, Portsmouth, Londonderry, Bedford, Peterborough, Concord and Exeter. A clinic closer to home may make it easier to attend a full initial course or return promptly if further sessions are recommended.
When to seek urgent support
Contact a healthcare professional promptly if depression symptoms are worsening, daily functioning is becoming difficult or you are concerned about a return of suicidal thoughts. If there is an immediate risk of harm to yourself or someone else, call emergency services or go to the nearest emergency department.
A follow-up plan should include crisis contacts and identify who can provide support outside clinic hours. If you are unsure whether a change in mood is serious enough to discuss, it is generally better to ask early.
Getting help in New Hampshire
TMS Therapy New Hampshire’s clinic listings can help you compare the 29 published local listings and find providers in your area. You can also consult the directory’s insurance guide for questions about coverage, then use the contact page if you need help navigating the listings.
This article is educational information, not medical advice.
This page is informational and is not medical advice.