Hyperbaric Oxygen Therapy for PTSD Treatment in Concord, CA

Post-traumatic stress disorder (PTSD) develops in some individuals following exposure to actual or threatened death, serious injury, or sexual violence. It is estimated that approximately 7 to 8% of Americans will experience PTSD at some point in their lives, with higher prevalence among military veterans (11 to 20% of those who served in recent conflicts), law enforcement and first responders, survivors of sexual assault, and individuals exposed to childhood trauma or accidents.

In the Bay Area and Northern California, NorCal Hyperbarics serves a significant veteran population — Travis Air Force Base, the Mare Island area, and the broader Department of Veterans Affairs network serving the region represent a substantial community of current and former service members who may carry PTSD diagnoses, often complicated by co-occurring traumatic brain injuries from blast exposure. PTSD also affects civilians following car accidents, workplace trauma, natural disasters, and interpersonal violence.

Modern neuroscience has fundamentally reframed PTSD: rather than a purely psychological response to adversity, it is recognized as a condition with measurable neurobiological correlates — structural and functional changes in the brain that can be identified on imaging. These include reduced hippocampal volume, amygdala hyperreactivity, prefrontal cortex dysregulation, and widespread neuroinflammation. This understanding opens the door to biological treatments — including HBOT — that address the condition at the neurological level.

PTSD is increasingly understood as a disorder of neurobiological dysregulation — specifically, a failure of the prefrontal cortex to appropriately modulate the amygdala's threat response. Neuroimaging studies consistently show hyperactivation of the amygdala (the brain’s alarm center), reduced prefrontal cortex volume and activity (reducing top-down control), decreased hippocampal volume (impairing memory contextualization and extinction learning), and widespread neuroinflammation in PTSD patients. Standard treatments — SSRIs and trauma-focused psychotherapy — produce meaningful improvement in many patients, but a substantial proportion do not achieve remission. HBOT addresses the neurobiological layer that medications and talk therapy cannot fully reach.

At pressures of 1.5 to 2.5 atmospheres breathing 100% oxygen, HBOT increases cerebral blood flow to hypoperfused regions, reduces neuroinflammation, promotes hippocampal neurogenesis, and restores the metabolic function of the prefrontal cortex. SPECT and fMRI studies in PTSD patients treated with HBOT have documented normalization of perfusion in previously hypofunctional brain regions, alongside clinical improvements in symptom scores. A controlled study by researchers at the Sagol Center for Hyperbaric Medicine demonstrated significant reductions in PTSD symptom severity following HBOT, with brain imaging correlates of symptom improvement.

HBOT also addresses TBI-related contributions to PTSD symptoms in veterans — a significant advantage given the high rate of co-occurrence in this population. Protocols for PTSD typically involve 40 sessions and are coordinated with the patient’s existing mental health treatment team. HBOT does not replace psychotherapy but serves as a powerful biological preparation that makes therapeutic work more accessible and effective.