TMS may reduce depression symptoms for some people when medication or therapy have not helped, with response and remission measured by symptom change and daily functioning.
Does TMS work?
Transcranial magnetic stimulation (TMS) can help some people with depression, particularly when symptoms have not improved enough with medication, talking therapy, or both. It is not a guaranteed treatment, and results differ from person to person.
TMS uses magnetic pulses delivered through a coil placed against the scalp. The pulses are intended to stimulate brain areas involved in mood regulation. It is an outpatient treatment, meaning people usually return home after each appointment and do not need general anaesthetic.
TMS was cleared by the US Food and Drug Administration for major depressive disorder in 2008. It was also cleared for depression with comorbid anxiety in 2021. In Michigan, TMS is offered in a range of settings, from larger metropolitan areas to cities such as Grand Rapids, Lansing, Detroit, Troy and Southfield.
The important question is not simply whether TMS “works”, but what improvement means for an individual person. Clinicians and research studies usually discuss outcomes using terms such as 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 around half on a recognised depression rating scale.
This does not necessarily mean that all symptoms have gone. Someone may still have difficult days, lower energy, disrupted sleep or lingering anxiety. However, they may notice that depression feels less intense, less frequent or easier to manage.
A meaningful response can look different for different people. It might include:
- getting out of bed more regularly
- returning to work, study or usual responsibilities
- feeling more able to connect with family and friends
- having fewer suicidal thoughts or less hopelessness
- sleeping more consistently
- finding it easier to take part in therapy or daily routines
- needing less time to recover after stressful events
Rating scales are useful because they give clinicians a structured way to track change. But they are only one part of the picture. A person’s own account of daily functioning and quality of life also matters.
What does “remission” mean?
Remission generally means that depression symptoms have reduced to a minimal level, or are no longer causing significant day-to-day impairment. In research, it is usually defined by scoring below a set threshold on a depression questionnaire or clinician-rated scale.
Remission is a stronger outcome than response. A person can respond to TMS without reaching remission. For example, they may feel considerably better than before treatment but still experience enough symptoms to affect work, relationships or self-care.
It is also possible for someone to reach remission and later have symptoms return. Depression can be recurrent, and remission does not mean a person has failed if they need further support in the future. Continuing care may include medication, psychotherapy, healthy routines, support for sleep or substance use, and follow-up with a prescribing clinician.
Some TMS providers may discuss maintenance treatment or a further course of TMS if symptoms return. Whether this is appropriate depends on the person’s history, previous benefit, clinical needs and insurance arrangements.
What do published trials suggest?
Published clinical trials and later real-world studies suggest that TMS can lead to substantial improvement for some adults with major depressive disorder. A smaller group of people reach remission.
The exact results reported across studies vary. This is partly because studies do not all include the same types of patients, use identical treatment protocols or measure outcomes in the same way. Some studies focus on people whose depression has not responded to several previous treatments, while others include people earlier in their treatment journey. Some include ongoing medication or therapy alongside TMS.
For this reason, it is best to be cautious about any single success figure. A percentage from one study cannot reliably predict what will happen for one person in Michigan.
The most balanced interpretation is that TMS is an evidence-based option with a realistic chance of helping, but it does not help everyone to the same extent. Some people experience a clear response or remission. Some have a smaller improvement. Others do not notice enough change to consider the treatment worthwhile.
A clinic should be able to explain how it monitors progress during a course and what it would do if improvement is limited.
Why can individual results vary?
Depression is not one identical condition. Symptoms, causes, severity and co-occurring health concerns differ widely. That makes variation in TMS outcomes unsurprising.
Factors that may influence results include:
- The nature and severity of depression. Longer-lasting, more severe or more treatment-resistant depression can be harder to treat, although people with difficult-to-treat depression may still benefit from TMS.
- Previous treatment history. A clinician will usually consider medications, therapy, hospital admissions and previous treatments when assessing whether TMS is suitable.
- Other mental health symptoms. Anxiety, trauma-related symptoms, obsessive-compulsive symptoms, substance use and other conditions can affect how depression is experienced and treated.
- Physical health and sleep. Chronic pain, thyroid problems, neurological conditions, sleep disorders and other health issues may contribute to low mood or fatigue.
- Treatment protocol. TMS is not delivered in exactly the same way for every person. The target area, pulse pattern, intensity and schedule can differ according to the treatment plan and clinical judgement.
- Attendance and completion. A standard course is often about 36 weekday sessions over six to nine weeks. Missing sessions does not automatically mean treatment will fail, but regular attendance helps the clinician deliver and assess a full course.
- Support alongside TMS. TMS may be one part of a broader care plan rather than a replacement for every other form of support.
It is also worth remembering that change may not be immediate. Some people notice improvement partway through treatment; others may notice it later in the course or shortly afterwards. A lack of early change does not always tell the full story, but it is sensible to discuss expectations and progress regularly with the treating team.
What TMS treatment is like
Before treatment, a clinician should review symptoms, medical history, current medication and any factors that could affect safety. TMS is generally performed while the person is awake and seated.
During a session, the coil makes clicking sounds and tapping sensations may be felt on the scalp. Common side effects include temporary scalp discomfort and headache. These often lessen as treatment continues or can be managed by adjusting aspects of the session.
Seizure is a rare risk of TMS. A provider should discuss safety screening and potential risks before treatment begins, including any history of seizures or conditions that may affect suitability.
TMS is not the same as electroconvulsive therapy (ECT). It does not involve inducing a seizure as part of treatment, and it does not require general anaesthetic.
Questions to ask a Michigan TMS provider
When considering TMS, it can help to ask practical and clinical questions rather than relying on broad promises about success.
You may wish to ask:
- How will you assess whether TMS is appropriate for me?
- Which symptoms and goals will we track?
- How do you define response and remission?
- How often will my progress be reviewed?
- What happens if I have side effects or do not improve as expected?
- Can I continue medication or therapy during treatment?
- Does my insurance require prior authorisation or evidence of earlier treatments?
- What are the likely out-of-pocket costs if my cover is limited?
Insurance cover varies by plan and clinical circumstances. In Michigan, people may encounter plans from Blue Cross Blue Shield of Michigan, Priority Health, Molina Healthcare of Michigan, McLaren Health Plan, UnitedHealthcare, Aetna, Michigan Medicaid or Medicare. It is important to confirm benefits directly with both the insurer and clinic before starting treatment.
Finding TMS care in Michigan
TMS Therapy Michigan currently lists 55 published clinics across the state. Directory listings include options in places such as Grand Rapids, Lansing, Troy, Southfield, Detroit, Grandville, Flint, St. Clair Shores, Brighton, Okemos, East Lansing and Bloomfield Hills.
Location matters because treatment usually involves frequent weekday appointments over several weeks. When comparing clinics, consider travel time, appointment availability, insurance processes and whether the service communicates clearly about monitoring outcomes.
Getting help in Michigan
Use the TMS Therapy Michigan clinic listings to explore local options, read the insurance guide for help understanding cover, and visit the contact page if you need help using the directory.
This article is educational information, not medical advice.
This page is informational and is not medical advice.