Stellate Ganglion Block in Tomball, TX: Rapid Relief for PTSD, Anxiety, and Trauma

Tomball carries a quiet Texas pride — the kind built from decades of being a genuine small town that somehow held its character while the Houston metro grew up around it. The Sam Houston Trail Riders have passed through here for over 74 consecutive years. Old Town Tomball draws visitors with its history, its food, and its festivals. Tomball Regional Medical Center anchors a healthcare community that the region depends on. This is a place where people look out for each other.

That community spirit, though, doesn’t make PTSD or trauma-driven anxiety easier to talk about. In a town where resilience is a cultural expectation — where first responders, veterans, and healthcare workers quietly manage what they’ve seen — the private experience of a nervous system that refuses to calm down is often carried alone. You look fine from the outside. Inside, your heart races at a neutral sound. You’ve run through the same intrusive memory three times before breakfast. The hypervigilance that kept you safe in a dangerous situation is still running, full-speed, in a context that no longer requires it.

That isn’t a failure to cope. It’s a physiological state — one that stellate ganglion block addresses at the biological level conventional treatments can’t reach. The Uniformed Services University of Health Sciences in Bethesda, whose researchers have led some of the most rigorous SGB studies published, found in their 2025 retrospective analysis that 96% of patients showed significant PTSD symptom improvement at six-month follow-up following bilateral two-level SGB — an average improvement of 55.48% in symptom scores. That isn’t a promising signal. That’s a treatment that’s working.

The stellate ganglion sits at the base of your neck, just in front of the seventh cervical vertebra — a compact cluster of sympathetic nerves that functions as a command relay between your brain’s threat-detection circuitry and the rest of your body. In normal stress responses, this relay activates during danger and quiets when the threat passes. After trauma — particularly severe or repeated trauma — this system can become chronically overactivated, maintaining elevated levels of norepinephrine in the brain and keeping the amygdala in a state of persistent high alert even when the original threat is long gone.

Stellate ganglion block has been performed safely since 1925, originally for chronic pain and vascular conditions. Its psychiatric application began with a 1947 report of improved mood following the procedure. Military physicians at Walter Reed Army Medical Center first documented its use specifically for combat-related PTSD in 2010, describing patients who experienced “immediate, significant and durable relief” — including one veteran who said, on the procedure table, that he hadn’t felt that good since he was 18 years old. Since then, the evidence base has grown to encompass 38 peer-reviewed publications, two randomized controlled trials, and increasingly sophisticated procedural refinements including the bilateral two-level technique.

Dr. Ho injects a local anesthetic near the stellate ganglion under real-time ultrasound guidance — a technique that allows him to visualize the exact anatomical target and surrounding structures before placing the needle, achieving accuracy that fluoroscopic (x-ray) guidance cannot provide. The anesthetic temporarily interrupts sympathetic nerve conduction. Researchers at the Uniformed Services University believe this interruption breaks the cycle by reducing nerve growth factor (NGF), normalizing norepinephrine production, and allowing the amygdala-sympathetic nerve axis to reset toward a pre-trauma baseline. The procedure itself takes approximately 15–20 minutes. Many Tomball patients describe feeling a warmth moving across their upper chest and a physical sense of release within the first hour — before the anesthetic has fully metabolized.