Treatment-Resistant Depression with Deep TMS

If you have tried two or more antidepressants and still feel stuck, your depression may need a different approach. Medication travels throughout your body before reaching the brain, and sometimes it doesn’t make a significant enough difference. Deep Transcranial Magnetic Stimulation (Deep TMS) uses magnetic pulses to target mood-related brain networks more directly, without surgery or anesthesia. At the Sun Health Center (SHC), we offer this treatment for people who haven’t found enough relief from standard antidepressants.

What “Treatment-Resistant” Actually Means

Depression itself is among the most common mental health conditions in the U.S. The National Institute of Mental Health reports that 8.3% of U.S. adults had at least one major depressive episode in 2021. Treatment-resistant depression (TRD) usually means that at least two different antidepressants haven’t improved your symptoms enough. The term might sound discouraging, but it only means the usual first steps haven’t worked well enough. We often see this in people who have followed their provider’s advice, tried different medications, changed doses, and still feel depressed. Some people start to blame themselves or wonder if they are doing something wrong. But it is not their fault. Treatment-resistant depression usually means it is time to try a different approach.

Why Pills Sometimes Can’t Reach the Problem

Antidepressants help many people. They can change how the brain uses serotonin, norepinephrine, dopamine and other chemical messengers. For some people, that is enough to reduce symptoms and restore daily function. However, according to a recent Translational Psychiatry review, first-line treatment with therapy and medication leads to remission in only about 50% of cases. For others, depression continues because deeper mood-regulating circuits are still underactive. These circuits help with motivation, emotions, focus, pleasure and decision-making. When they aren’t active, you might feel flat, tired, or disconnected, even if you take your medication as prescribed. This is one reason why TRD can be so frustrating. You might do everything right and follow your provider’s advice, but if the brain networks that control mood are not responding, your symptoms may continue.

How Deep TMS Works

Deep TMS stands for deep transcranial magnetic stimulation. This noninvasive treatment option uses magnetic pulses to stimulate nerve cells in the brain. Both standard TMS and Deep TMS use magnetic fields. However, Deep TMS uses a coil that stimulates deeper, broader areas of the brain than standard repetitive TMS. During treatment, the device sends magnetic pulses through the scalp and skull. These pulses create small electrical currents that activate brain cells in targeted regions. For depression, Deep TMS commonly targets the prefrontal cortex, especially areas involved in mood control. At SHC, we can offer Deep TMS as part of a structured treatment plan for depression. We begin by reviewing your history, explaining how the treatment works, and making sure you know what to expect before your first session.

What the Outcomes Data Shows for TRD Patients

While the FDA has cleared TMS for depression, researchers are still mapping out why it helps. One emerging explanation involves inflammation. Depression is associated with elevated inflammation in the brain’s mood-regulating circuits, and TMS appears to calm that response. The evidence is not always the same. Another study with a different stimulation pattern found only a small, non-significant change in inflammation. Response to TMS varies, and researchers are still learning which patients benefit most. What this growing body of work suggests is that TMS acts on underlying brain circuits and the inflammation around them, which may be why it helps patients who didn’t respond to antidepressants alone.

What a Course of Treatment Looks Like at SHC

A Deep TMS course at SHC starts with an evaluation. We review your depression history, current symptoms, past medications, therapy history, medical conditions and safety factors. If Deep TMS fits your needs, your first session includes a mapping session. This helps us find the right treatment location and stimulation level for your brain. A typical Deep TMS treatment plan for depression includes daily sessions for several weeks. There’s no need to stay overnight, and you usually don’t need someone to drive you home unless your provider suggests it for another reason. Deep TMS can also fit into a broader treatment plan that includes therapy, medication management, sleep support, nutrition, movement and relapse prevention.

Who’s a Candidate?

You may be a candidate for Deep TMS if you are an adult with major depressive disorder and antidepressants haven’t helped enough. Your health care team might consider it after trying two or more medications, especially if side effects or only partial relief have made treatment hard. Deep TMS is also worth discussing if depression affects your ability to work, study, or function on a daily basis. At SHC, we help you sort through these symptoms and decide whether Deep TMS is part of your treatment plan. Not everyone qualifies. Deep TMS uses strong magnetic fields, so people with certain metal implants in or near the head should not receive treatment. Your provider also needs to review your medical history of neurological conditions, bipolar disorder, current substance use concerns and pregnancy or nursing status.

Frequently Asked Questions About Deep TMS

Is Deep TMS painful?

Most people describe the feeling as tapping or knocking on the scalp. Some people have scalp discomfort, jaw discomfort or headache. These effects often improve as treatment continues.

Is Deep TMS the same as ECT?

No. Electroconvulsive therapy uses electrical stimulation and requires anesthesia. TMS uses magnetic pulses and doesn’t require anesthesia.

Do I have to stop my medication?

Not always. At SHC, your provider reviews your current medication plan before treatment. Never stop antidepressants without medical guidance.

How long does it take to feel better?

Some people notice improvement within a few weeks. Others need the full course of treatment before they see a clear change. We track your symptoms throughout treatment to measure progress rather than rely on guesswork.

Is Deep TMS a last resort?

No. Many people now consider Deep TMS after antidepressants haven’t helped enough, rather than waiting until every possible medication has failed. TRD often responds better when treatment shifts sooner instead of repeating the same approach again and again.

Take the Next Step with SHC

If two or more antidepressants haven’t helped enough, you deserve a treatment plan that looks beyond willpower and trial-and-error medication changes. Contact SHC today to learn whether Deep TMS is an appropriate treatment option.