TMS is an outpatient magnetic brain stimulation that may help some people with depression, with results described as response or remission rather than a guaranteed cure.
Does TMS work for depression?
Transcranial magnetic stimulation, usually shortened to TMS, can help some people with depression, particularly when symptoms have not improved enough with antidepressant medication, talking therapy, or both. It is not a guaranteed treatment, and it does not work in the same way for everyone.
TMS uses magnetic pulses placed against the scalp to stimulate areas of the brain involved in mood regulation. It is an outpatient treatment: people remain awake, and there is no anaesthetic or recovery period like there is with some hospital-based procedures.
TMS was cleared by the FDA for major depressive disorder in 2008. It was later cleared for depression with comorbid anxiety in 2021. Clearance means the treatment has been reviewed for a particular use; it does not mean every person will have the same outcome.
For people considering treatment in Indiana, it can be helpful to understand the terms clinics and research studies use when discussing results: response and remission.
What does “response” mean?
In TMS research, a response usually means that a person’s depression symptoms have reduced substantially from where they started. A common research definition is a reduction of at least half on a recognised depression rating scale.
That does not necessarily mean depression has gone away. Someone may be considered a responder if they are sleeping better, feeling less hopeless, managing daily responsibilities more easily, or having fewer and less intense low-mood days, while still experiencing some symptoms.
Response can be meaningful. A person who has spent months struggling to get out of bed, concentrate at work, or enjoy time with family may notice real improvement even if they are not yet symptom-free.
However, response is measured differently from one study or clinic to another. Some services use standard questionnaires completed regularly during treatment. Others also consider a person’s own account of changes in mood, functioning, anxiety, sleep and quality of life.
What does “remission” mean?
Remission generally means that depression symptoms have reduced to a very low level or are no longer causing clinically significant difficulty. In simple terms, the person no longer meets the usual threshold for an active depressive episode on a symptom scale.
Remission is often the outcome people hope for, but it is important to distinguish it from a permanent cure. Depression can return after any successful treatment, including medication, therapy and TMS. Some people remain well after a course of TMS, while others may need ongoing mental health support or, in some cases, a later course of treatment.
A person in remission may still have ordinary bad days, stress, grief or fatigue. The difference is that these experiences are no longer part of a sustained, disabling pattern of depressive symptoms.
What do published TMS trials generally report?
Published clinical trials and real-world treatment studies generally show that TMS helps a meaningful proportion of people with depression, including many who have already tried medication. Across studies, response is commonly reported in around half of treated participants, while remission is reported in a smaller group.
These broad findings need careful interpretation. Results vary depending on:
- the type of TMS protocol used;
- how severe and long-standing depression is;
- how many previous treatments have been tried;
- whether the person completes the planned course;
- how response and remission are defined;
- whether results come from a tightly controlled trial or routine clinical practice.
The figures quoted online can therefore look different from one source to another. A clinic should be able to explain what outcome measures it uses and what it means when it discusses response or remission.
It is also worth remembering that study averages cannot predict an individual outcome. A group result may be encouraging, but it cannot tell one person whether they will respond, remit, improve only partly, or not notice enough benefit.
Why do individual TMS results vary?
Depression is not a single, identical condition. It can involve different symptom patterns, causes, medical histories and life circumstances. This is one reason outcomes vary.
Some factors a clinician may consider include the length and severity of the current depressive episode, past episodes of depression, previous treatment responses, co-occurring anxiety, sleep problems, substance use, physical health conditions and current medicines.
Treatment delivery also matters. TMS is usually given repeatedly rather than as a one-off session. A standard course is often about 36 weekday sessions over six to nine weeks. The clinician may adjust treatment settings or review progress during the course, depending on the protocol and the person’s response.
Attendance can be important because TMS is designed as a course of treatment. Missing sessions does not automatically mean it will fail, but frequent interruptions can make it harder to complete treatment as planned. If travel, work, caring responsibilities or other barriers are likely to affect attendance, it is sensible to discuss this before starting.
Expectations matter too. TMS tends to produce gradual change rather than an immediate shift after the first appointment. Some people notice improvements in sleep, energy or motivation before mood lifts. Others do not notice clear changes until later in the course. A clinician should monitor symptoms rather than relying only on day-to-day impressions.
TMS is not right for every situation
TMS may be considered as part of a wider depression treatment plan, rather than a replacement for every other form of care. Some people continue antidepressant medication or psychotherapy during TMS, while others and their prescribers may make changes to treatment separately.
A full assessment should cover medical history, mental health history and safety considerations. TMS is generally well tolerated, but common side effects include temporary scalp discomfort and headache. Seizure is rare. The treating team should explain potential benefits, limitations and risks in relation to the individual patient.
Urgent symptoms need urgent care. If someone is at immediate risk of harming themselves or another person, they should contact emergency services or a local crisis service rather than waiting for a routine TMS consultation.
Questions to ask an Indiana TMS clinic
Indiana has a range of treatment locations. TMS Therapy Indiana currently lists 68 published clinics, including listings in Indianapolis, Richmond, Columbus, Danville, Bloomington, Elkhart, Lafayette, Bedford, Fishers, Connersville, Carmel and Seymour.
When comparing options, useful questions include:
- How do you assess whether TMS is appropriate for me?
- Which TMS protocol do you use, and why?
- How will you measure progress during treatment?
- What would count as response or remission in my case?
- What happens if I have only a partial response?
- Can I continue my current medication or therapy?
- How will you coordinate with my GP, psychiatrist or other mental health professional?
- What are the expected appointment schedule and likely practical commitments?
- Do you work with my insurance plan?
Insurance arrangements vary by plan and provider. Indiana patients may see coverage options involving Anthem Blue Cross and Blue Shield, UnitedHealthcare, Aetna, Cigna, MHS Ambetter, CareSource Indiana, the Healthy Indiana Plan (Medicaid) or Medicare. It is still important to confirm eligibility, authorisation requirements, co-payments and network status directly with both the clinic and insurer.
A realistic way to think about success
TMS can be worthwhile for people whose depression has remained difficult to treat, but it is best approached with realistic hope rather than certainty. Success may mean remission. It may also mean a substantial reduction in symptoms, greater ability to function, or enough improvement for other treatments and daily routines to become more manageable.
The right question is not simply “Does TMS work?” It is “What are the likely benefits, limits and practical demands for me, given my health history and current symptoms?” A qualified clinician can help answer that question after an individual assessment.
Getting help in Indiana
Use the TMS Therapy Indiana clinic listings to explore published providers across the state, consult the insurance guide for coverage information, and visit the contact page if you need help navigating the directory.
This article is educational information, not medical advice.
This page is informational and is not medical advice.