TMS Therapy in New Hampshire: What Patients Should Know
By Dr. Gurvinder Arora · October 27, 2026
For many people in Nashua and southern New Hampshire, depression does not lift after the first or even second antidepressant. If that sounds familiar, you may have heard about Transcranial Magnetic Stimulation, or TMS. This guide explains, in plain language, what TMS is, how a course of treatment works, who tends to benefit, and the questions worth bringing to your psychiatrist.
TMS in One Paragraph
TMS is an FDA-cleared, non-invasive brain stimulation treatment. A magnetic coil placed against the scalp sends short pulses into a mood-related area of the brain. There is no surgery, no anesthesia and no downtime. It is used mainly for major depression, including depression with anxiety, that has not improved enough with medication or where medication side effects were hard to tolerate.
How the Treatment Works
The coil produces magnetic pulses of a strength often compared to an MRI. They pass through the skull without pain and activate nerve cells in a chosen target, most often the left dorsolateral prefrontal cortex. This region is frequently underactive in depression and is linked to the brain's mood-regulation network. Repeating the stimulation over several weeks is thought to strengthen those connections.
Because the treatment acts on a specific brain area instead of travelling through the bloodstream, it does not cause the weight gain, sexual side effects or drowsiness that some people experience with medication.
Conditions TMS May Be Used For
TMS was first cleared for adults with major depressive disorder who had not been helped by antidepressants. Today, depending on the device and protocol, it may also be considered for:
Depression with anxious distress
Obsessive-compulsive disorder, using certain deep TMS systems
Quitting smoking, using a specific deep TMS system
Depression in older adolescents, with certain cleared devices
Research is also exploring TMS for PTSD, generalized anxiety and bipolar depression, but evidence for these uses is less settled. TMS can be combined with medication and therapy, so you usually do not need to stop current treatment.
A Typical Course, Step by Step
Psychiatric evaluation. A psychiatrist reviews your symptoms, the medications you have tried, your medical history and any implants to decide whether TMS is a safe, reasonable next step.
Motor threshold mapping. At the first session the team locates the treatment spot and sets the pulse strength based on how your brain responds.
Daily sessions. Treatment is usually five days a week for four to six weeks, often followed by a short taper. Each session lasts from a few minutes to about 40 minutes, depending on the protocol. You stay awake in a reclined chair, wear earplugs, and feel a tapping sensation while the device clicks.
Back to normal life. No sedation is used, so most people drive themselves and return to work or school the same day.
Improvement usually builds gradually, with many people noticing changes between the second and fourth week.
What Results Look Like
For treatment-resistant depression, studies and clinical experience suggest that roughly 50 to 60 percent of people who finish a course improve meaningfully, and about one in three reach remission. That is encouraging for a group who had not responded well to medication.
Still, TMS is not a guaranteed fix. Some people respond fully, some partly, and some not at all. When it works, the benefit often lasts for months or longer, and a short maintenance course is sometimes used if symptoms return. Ongoing psychiatric follow-up, therapy, sleep and physical activity all support better outcomes.
Safety, Side Effects and Who Should Avoid TMS
TMS is generally well tolerated and does not affect memory. Side effects are usually mild and fade within one to two weeks:
Scalp discomfort or tingling under the coil
Mild headache
Facial muscle twitching during pulses
Brief lightheadedness
Seizure is the most serious risk and is rare, estimated at well under 1 in 10,000 patients. Careful screening keeps that risk low.
TMS is not appropriate for people with magnetic-sensitive metal or electronic devices in or near the head, such as aneurysm clips or coils, cochlear implants, deep brain stimulators or metal fragments. Ordinary dental fillings and braces are generally not a problem. A history of seizures, head injury or certain neurological conditions requires extra caution, so share every implant, medication and supplement with your care team.
Insurance and Cost in New Hampshire
Many commercial plans and Medicare cover TMS for depression when specific criteria are met, usually after several antidepressant trials and sometimes psychotherapy. Most plans require prior authorization. Call the number on your insurance card to ask about TMS coverage, the criteria your plan uses and your expected out-of-pocket costs. For more on coverage, see our guide to using insurance for psychiatry in New Hampshire.
Common Questions
Is TMS painful?
Most people feel tapping and some scalp discomfort that eases after the first week. The intensity can be adjusted.
How is TMS different from ECT?
TMS does not induce a seizure, does not need anesthesia and does not affect memory. You can leave and carry on with your day right after each session.
Will I need to stop my antidepressant?
Usually not. TMS is often added to existing medication and therapy, and your psychiatrist will guide any changes.
What if TMS is not right for me?
There are other paths, including medication adjustments, psychotherapy and other treatments for depression that a psychiatrist can review with you.
Talking With a Psychiatrist in Nashua
If depression has not improved with treatment, the next step is a careful conversation. A Psych Nashua psychiatrist can review what you have already tried, look at your overall health, and talk through whether TMS or another option fits your goals. Learn about adult psychiatry or contact Psych Nashua to schedule an evaluation. If you are supporting someone else, our article on how to support a loved one with depression may help.
This article is for general education and is not a substitute for professional medical advice, diagnosis or treatment. If you are in crisis or thinking about harming yourself, call or text 988 (Suicide & Crisis Lifeline) or go to the nearest emergency room.
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