Deep Transcranial Magnetic Stimulation Combined With Brief Exposure for Posttraumatic Stress Disorder: A Prospective Multisite Randomized Trial



      Posttraumatic stress disorder (PTSD) is both prevalent and debilitating. While deep transcranial magnetic stimulation (dTMS) has shown preliminary efficacy, exposure therapy remains the most efficacious, though limited, treatment in PTSD. The medial prefrontal cortex (mPFC) is implicated in extinction learning, suggesting that concurrent mPFC stimulation may enhance exposure therapy. In this randomized controlled multicenter trial, the efficacy and safety of mPFC dTMS combined with a brief exposure procedure were studied in patients with PTSD.


      Immediately following exposure to their trauma narrative, 125 outpatients were randomly assigned to receive dTMS or sham. Twelve sessions were administered over 4 weeks, with a primary end point of change in 5-week Clinician-Administered PTSD Scale for DSM-5 score. This clinical study did not include biological markers.


      Clinician-Administered PTSD Scale for DSM-5 score improved significantly in both groups at 5 weeks, though the improvement was smaller in the dTMS group (16.32) compared with the sham group (20.52; p = .027). At 9 weeks, improvement continued in Clinician-Administered PTSD Scale for DSM-5 score in both groups but remained smaller in dTMS (19.0) versus sham (24.4; p = .024).


      Both groups showed significant PTSD symptom improvement, possibly from the brief script-driven imagery exposure. While our design was unable to rule out placebo effects, the magnitude and durability of improvement suggest that repeated ultrabrief exposure therapy alone may be an effective treatment for PTSD, warranting additional study. The surprising and unexpected effect in the dTMS group also suggests that repeated mPFC stimulation with the H7 coil may interfere with trauma memory–mediated extinction. Our results provide new insight for dTMS approaches for possible future avenues to treat PTSD.


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      Linked Article

      • Combining Transcranial Magnetic Stimulation With Behavioral Interventions for Posttraumatic Stress Disorder: Reasons for Optimism Despite Negative Findings
        Biological PsychiatryVol. 90Issue 10
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          Posttraumatic stress disorder (PTSD) is a serious problem that impacts civilians and veterans worldwide. Despite significant strides in efficacious treatments, symptoms tend to persist in a large portion of individuals. This is sometimes due to the lack of completing often lengthy treatment protocols or because symptoms persist even after successful treatment completion. For first-line evidence-based psychotherapies (EBPs) for PTSD, such as cognitive processing therapy or prolonged exposure, studies have found that approximately one third of those seeking treatment drop out before completion, with higher rates in Veterans Healthcare Administration and Department of Defense settings (1).
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