TMS stands for transcranial magnetic stimulation. The name sounds like science fiction, which scares people off a treatment that is, in the room, surprisingly undramatic. You sit in a chair, awake, and drive yourself home afterward.
What it is
TMS uses focused magnetic pulses to stimulate the regions of the brain involved in mood regulation. It's FDA-cleared for depression that hasn't responded to medication. Crucially, it's drug-free: nothing enters your body, so there are none of the medication side effects that push people away from pills, like weight change, sexual side effects, or the emotional numbness some antidepressants cause.
Does it hurt?
Most people describe it as a tapping or knocking sensation on the scalp rather than pain. It can feel odd at first, and some people notice a mild headache or scalp tenderness early on that usually eases as they get used to it. You're awake and alert the whole time.
What a session looks like
- You sit in a chair and a cushioned device is positioned against your head.
- The device delivers pulses in cycles: a stretch of tapping, then a pause, repeated.
- An individual session is relatively short, and you're free to go right afterward.
- Because there's no sedation, you can drive, work, and go about your day.
The schedule is the commitment
The main thing to plan for isn't intensity, it's frequency. TMS is typically done as a series of sessions across several weeks rather than a one-off. That rhythm is part of how it works, so the real question people weigh is whether they can fit the schedule into their life, not whether they can tolerate a session.
Is it covered by insurance?
TMS is covered by many insurance plans for depression that hasn't responded to medication, when medical criteria are met, and coverage has broadened over the years. In Missouri that can include many people on MO HealthNet. As always, confirm the specifics with the clinic and your insurer rather than assuming.
TMS and esketamine (Spravato) are the two big FDA-authorized options once medication alone hasn't worked. They're different tools, and which one fits depends on you. See the full picture on your options after antidepressants.