Quick answer: Transcranial magnetic stimulation (TMS) is a non-invasive brain treatment that uses brief magnetic pulses, delivered through a coil placed against the scalp, to gently stimulate areas of the brain linked to mood. It is used mainly for depression that has not improved enough with medicines and talking therapy. You stay awake, there is no surgery or anaesthetic, and you can usually return to your normal day straight after each session. In Singapore, TMS is prescribed and monitored by a psychiatrist at selected clinics. If you are having thoughts of harming yourself, seek urgent help now: call the Samaritans of Singapore (SOS) on 1767, go to your nearest A&E, or call 995.
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Living with depression that has not lifted despite trying different treatments can feel discouraging, but it does not mean nothing more can be done. Transcranial magnetic stimulation is one further option that a psychiatrist may discuss with you. This guide explains, in plain terms, what TMS is, how it works, how it differs from other brain treatments, and what a course involves so you can have an informed conversation with your doctor.
What TMS is
TMS is a non-invasive treatment. During a session, a specially shaped coil is held against the scalp, and it sends out brief magnetic pulses. These pulses pass painlessly through the skull and gently stimulate a specific area of the brain involved in regulating mood. Because the effect is targeted, treatment is aimed at the region that matters for depression rather than the whole brain. The person is fully awake and alert throughout, and TMS does not involve any surgery, cuts, or anaesthetic. When pulses are given in repeated trains over a session, the treatment is often called repetitive TMS, or rTMS.
What TMS is used for
TMS is used mainly for depression that has not responded well enough to medicines and/or talking therapy. It is a recognised treatment for this situation and is offered when other approaches have been tried without enough benefit. Researchers and clinicians are also studying and, in some settings, using TMS for certain other conditions, such as obsessive-compulsive disorder (OCD). Whether TMS is appropriate for you depends on your diagnosis and history, which is why a psychiatrist assesses each person individually rather than offering it as a first step for everyone.
How it differs from ECT
People sometimes confuse TMS with electroconvulsive therapy (ECT). They are different. TMS is gentler: it does not need a general anaesthetic, it does not deliberately cause a seizure, and it does not affect memory in the way ECT sometimes can. ECT, however, remains an important and effective treatment and may be recommended for more severe or urgent situations. Your psychiatrist can explain which approach fits your circumstances.
How to prepare and what happens
Before starting, you will have an assessment to check whether TMS is suitable for you. This includes reviewing your mental and physical health, your medicines, and any implants or devices. If TMS is suitable, treatment is given as a course of sessions spread over several weeks. During a session you sit comfortably in a chair while the coil delivers pulses to your scalp. You may feel a tapping or knocking sensation on your head and hear a clicking sound with each pulse. Sessions do not require sedation, so you can usually return to your normal activities straight afterwards, including driving and going back to work.
What to expect and results
TMS does not usually work overnight. For many people, any improvement builds gradually over the course of treatment rather than appearing after a single session, so it helps to attend the full course as planned. The aim is a meaningful lift in mood and daily functioning, and many people find the treatment worthwhile, though responses vary from person to person. Sometimes a maintenance approach or a repeat course is used later to help keep the benefit. Your psychiatrist will review your progress along the way and adjust the plan with you.
Side effects
TMS is generally well tolerated, and side effects are usually mild. The most common are scalp discomfort or a headache during or after a session, and these tend to lessen as the course goes on. There is a very small risk of a seizure during treatment. This risk is one of the main reasons people are carefully screened beforehand and monitored during sessions. Tell your treatment team about any discomfort so they can adjust settings for your comfort.
Who is not suitable
TMS is not suitable for everyone. People with certain metal implants or electronic devices in or near the head, and some other medical conditions, may not be able to have it safely. This is exactly what the pre-treatment assessment is designed to identify. Being honest about your full medical history, including any implants, previous seizures, or other conditions, helps your psychiatrist decide whether TMS is a safe option for you.
Cost and access in Singapore
TMS is a specialised treatment offered at selected clinics rather than at every practice. In Singapore it is provided under the care of a psychiatrist, in both public and private settings. Because arrangements and coverage differ between providers, it is best to ask the clinic directly about what a course involves and about any support available to you. Your psychiatrist or GP can help point you towards a service that offers it.
When to seek help
If your low mood is worsening, or if you are struggling to cope, speak to your doctor or psychiatrist rather than waiting. Seek urgent help immediately if you have thoughts of harming yourself or ending your life: call the Samaritans of Singapore (SOS) on 1767, go to your nearest A&E, or call 995. You do not have to manage a crisis alone, and reaching out is a sign of strength, not weakness. Remember that TMS is a prescribed treatment that a psychiatrist plans and monitors, so keep your appointments and share any concerns with your team.
Common questions
Is TMS painful?
Most people find it uncomfortable rather than painful. You may feel a tapping sensation on your scalp and hear clicking, and any scalp discomfort or headache usually eases as the course continues.
Will I be put to sleep?
No. Unlike ECT, TMS does not use anaesthetic or sedation. You stay awake and alert, and can usually drive and return to your day right afterwards.
How long does a course last?
TMS is given as a series of sessions over several weeks. Your psychiatrist will explain your specific plan, as this depends on your situation.
Will TMS affect my memory?
TMS does not affect memory the way ECT sometimes can. If you notice any changes in how you are feeling or thinking, tell your treatment team.
Can I stop my other treatments once I start TMS?
Not on your own. TMS is often used alongside other care. Never stop or change medicines or therapy without discussing it with your psychiatrist first.
Related guides
Sources
- Institute of Mental Health
- HealthHub
- NHS
- Royal College of Psychiatrists
Important: This guide is for general information and education only. It is not a diagnosis or a substitute for personalised medical advice. TMS is a prescribed treatment that a psychiatrist plans and monitors; always speak with a qualified doctor about your own situation. If you are in crisis or having thoughts of self-harm, contact the Samaritans of Singapore (SOS) on 1767, go to your nearest A&E, or call 995.