What to Expect During Your First TMS Therapy Session
Starting any new medical treatment comes with questions. What will it feel like? How long does it take? Will it hurt? What happens if I react badly? These are completely reasonable things to wonder about, and for most people considering TMS therapy, the uncertainty around the experience itself is one of the biggest barriers to taking the first step. The good news is that TMS is one of the most straightforward treatment experiences in modern psychiatry. No anesthesia, no recovery time, no altered states, and no need to clear your schedule around it. Most patients tell us that after their first session, the main thing they feel is relief that it was so much simpler than they expected. This post walks you through exactly what happens, from the moment you arrive to the moment you leave, so there are no surprises. Before Your First Session: The Initial Evaluation TMS does not begin on the first day you walk in. Before any treatment starts, you will have a full psychiatric evaluation with one of our NeuPath clinicians. This is not a formality. It is a genuinely important step that shapes everything that follows. During this evaluation your psychiatrist will review your full psychiatric history, including previous diagnoses, medications you have tried, and how your symptoms have evolved over time. They will also screen for any contraindications to TMS, the most important of which is metal implants in or near the skull, such as cochlear implants, deep brain stimulators, or aneurysm clips. Dental fillings, braces, and joint replacements elsewhere in the body are not a concern. You do not need to fast beforehand. You do not need to stop any medications unless your psychiatrist specifically advises it. You do not need to arrange for anyone to drive you. You can come in, have the evaluation, and drive yourself home afterward exactly as you would after any other medical appointment. If you are also being considered for insurance coverage, this evaluation is where the clinical documentation that supports your prior authorization begins. Mapping Your Brain: The Motor Threshold Test On your first actual treatment session, before the coil delivers a single therapeutic pulse, your technician will perform what is called a motor threshold test. This sounds technical but is completely painless and takes only a few minutes. The motor threshold test determines the precise level of magnetic stimulation your brain responds to. Everyone’s brain is slightly different, and the dose of TMS needs to be calibrated to your individual neurology rather than applied at a fixed setting. To find your threshold, the technician positions the coil over the area of your scalp that corresponds to the motor cortex, the region that controls hand movement, and gradually increases the pulse intensity until your thumb or fingers produce a small, involuntary twitch. That twitch is the signal. It tells your technician exactly how much magnetic stimulation your brain needs to respond, and your therapeutic dose is then calculated as a percentage of that threshold. The result is a precisely personalized treatment, not a one-size-fits-all setting. This calibration is repeated periodically throughout your treatment course if your hair length changes significantly, since even a few centimeters of additional distance between the coil and your scalp can affect the dose. The Treatment Session Itself Once your threshold is mapped, the actual treatment begins. Here is what the experience looks like from start to finish. You sit in a comfortable chair. The TMS chair is reclined like a dentist’s chair but considerably more comfortable. You remain fully clothed. There is nothing to change into and nothing attached to your body. The coil is positioned against your scalp. Your technician places the TMS coil, a device roughly the size and shape of a figure-eight paddle, gently against the left side of your head. It rests on the surface of your scalp and does not apply pressure or cause any discomfort at the point of contact. The pulses begin. You will hear a rapid clicking or tapping sound as the coil activates. Simultaneously you will feel a light tapping sensation on your scalp in the area where the coil is positioned. Most patients describe it as a woodpecker-like sensation, rhythmic and localized. It is not painful for most people, though it can feel unfamiliar or slightly intense in the first couple of sessions before you adjust to it. You stay fully awake and alert. There is no sedation, no medication administered, and no altered state of any kind. You can listen to music, watch something on your phone, or simply sit quietly. Some patients use the time to meditate. Others catch up on podcasts. The session does not require your active participation beyond sitting still. The session ends. A standard TMS session runs between 19 and 37 minutes depending on the protocol being used. NeuPath also offers accelerated TMS formats including our One-Day TMS option for patients who need a compressed timeline. When the session is complete, the coil is removed, you stand up, and you leave. That is the full experience. What You Might Feel During the Session The most common sensations during TMS are: Scalp tapping. The magnetic pulses create a rhythmic tapping feeling on the skin directly under the coil. This is the most universal part of the experience and diminishes noticeably after the first week as your scalp adjusts. Jaw or facial muscle movement. Some patients notice subtle, involuntary twitching in the jaw or facial muscles during certain pulse sequences. This is normal, harmless, and typically reduces as the technician fine-tunes the coil position. A mild headache. Some patients, particularly in the first few sessions, develop a light tension headache that resolves within an hour or so after the session. Over-the-counter pain relief works fine if needed. This side effect tends to fade after the first week. What you will not feel: dizziness, nausea, sedation, cognitive impairment, or anything that would prevent you from driving, working, or carrying on with your day. TMS has no
