TMS for Anxiety: Can Transcranial Magnetic Stimulation Help Beyond Depression?

By Kyle Roth, FNP-BC, APRN, MSN, MHA | Roth Family Medicine and Mental Health | Pocatello, Idaho

Transcranial Magnetic Stimulation (TMS) is best known as an FDA-cleared treatment for major depressive disorder and obsessive-compulsive disorder. But for patients whose primary struggle is anxiety — generalized anxiety disorder, PTSD, panic disorder, or social anxiety — an important question arises: can TMS help with anxiety too?

The short answer is: yes, with important nuances. Here's what the research shows and what it means for patients in Pocatello and Southeast Idaho.

TMS uses focused magnetic pulses to stimulate specific regions of the brain. The magnetic field passes painlessly through the scalp and skull, inducing small electrical currents in targeted neural circuits. By delivering pulses at specific frequencies and locations, TMS can either increase or decrease activity in those circuits.

For depression, TMS is typically applied to the left dorsolateral prefrontal cortex (DLPFC) — a region that is underactive in depression. High-frequency stimulation increases activity in this area, which has downstream effects on mood regulation, motivation, and emotional processing.

For anxiety, the targets and protocols are somewhat different — reflecting the different neural circuits involved in anxiety versus depression.

Anxiety disorders involve dysregulation of several interconnected brain circuits:

The amygdala — the brain's threat-detection center — is hyperactive in anxiety disorders, generating exaggerated fear responses to non-threatening stimuli.

The prefrontal cortex (PFC) — particularly the ventromedial PFC — normally provides top-down regulation of the amygdala, dampening fear responses when they're not warranted. In anxiety disorders, this regulatory function is impaired.

The anterior cingulate cortex (ACC) — involved in error detection and conflict monitoring — is often hyperactive in OCD and GAD, contributing to rumination and worry.

The insula — involved in interoception (awareness of bodily sensations) — is hyperactive in panic disorder, contributing to catastrophic misinterpretation of physical symptoms.

TMS can target these circuits directly, offering a way to modulate anxiety-related neural activity that isn't possible with medications.

Different anxiety conditions call for different TMS approaches:

While left DLPFC stimulation is used for depression, right DLPFC inhibition (using low-frequency TMS) has been studied for anxiety. The right DLPFC is associated with negative affect and threat processing — reducing its activity may reduce anxiety symptoms. Several studies have found anxiolytic effects with this approach.

The same protocol used for depression — high-frequency stimulation of the left DLPFC — also appears to reduce anxiety symptoms, particularly in patients with comorbid depression and anxiety. This is clinically significant because depression and anxiety co-occur in approximately 50% of cases.

Deep TMS uses a specialized H-coil that can reach deeper brain structures than standard figure-8 coils. The FDA has cleared deep TMS for OCD, and it's being studied for other anxiety conditions. The ability to target deeper structures like the anterior cingulate cortex and insula may be particularly relevant for anxiety.

Multiple studies have examined TMS for GAD, with generally positive results. A 2019 meta-analysis found that TMS produced significant reductions in anxiety symptoms across multiple studies, with effect sizes comparable to those seen with medication. Right DLPFC inhibition and left DLPFC stimulation both showed efficacy.

PTSD is one of the most studied anxiety conditions in the TMS literature. A 2004 study by Cohen et al. found that right DLPFC TMS produced significant reductions in PTSD symptoms compared to sham stimulation. Subsequent studies have replicated these findings, with some showing effects on specific symptom clusters including hyperarousal, avoidance, and intrusive memories.

A 2020 randomized controlled trial found that deep TMS targeting the medial PFC and anterior cingulate produced significant PTSD symptom reduction, with effects maintained at 1-month follow-up.

The evidence for TMS in panic disorder is more limited but promising. Studies targeting the right DLPFC have found reductions in panic frequency and anticipatory anxiety. The mechanism may involve reduced amygdala hyperreactivity and improved prefrontal regulation of fear responses.

TMS for OCD has the strongest evidence base among anxiety-spectrum conditions, culminating in FDA clearance for deep TMS (Brainsway H7 coil) for OCD in 2018. The protocol involves deep TMS targeting the anterior cingulate cortex and medial PFC, combined with symptom provocation (brief exposure to OCD triggers before each session to activate the relevant circuits).

TMS for anxiety is most appropriate for patients who:

• Have not achieved adequate relief from two or more medication trials
• Have significant side effects from anxiety medications
• Have comorbid depression (TMS addresses both simultaneously)
• Prefer a non-pharmacological approach
• Are interested in a treatment with durable effects after the course is complete
• Have OCD (FDA-cleared indication for deep TMS)

At Roth Family Medicine and Mental Health, we offer TMS therapy for both depression and anxiety disorders. Our approach includes:

Comprehensive evaluation — We assess your anxiety history, prior treatments, and any comorbid conditions before recommending TMS.

Personalized protocol selection — The TMS target, frequency, and number of sessions are tailored to your specific condition and symptom profile.

Comfortable treatment environment — TMS sessions are conducted in a relaxed clinical setting. You remain awake and alert throughout, and can return to normal activities immediately after.

Integrated care — We coordinate TMS with any ongoing psychotherapy or medication management to maximize outcomes.

If you're struggling with anxiety that hasn't responded to conventional treatments, TMS may be worth exploring. We're here to help you understand your options and find the approach that's right for you.

Kyle Roth, FNP-BC, APRN, MSN, MHA is a board-certified family nurse practitioner at Roth Family Medicine and Mental Health in Pocatello, Idaho, specializing in treatment-resistant depression, ketamine therapy, TMS, hormone optimization, and integrative mental health care. To schedule a consultation, visit ZocDoc or call (208) 904-4705.