A 2024 comprehensive review found SGB efficacy for PTSD symptoms ranges from 70–83% of treated patients achieving clinically significant positive outcomes across the full range of existing studies
Stellate Ganglion Block in Missouri City, TX: Rapid Relief for PTSD, Anxiety, and Trauma
Missouri City has earned its “Safe, Scenic City” identity by doing things deliberately — attracting one of the most diverse, professionally accomplished communities in the southwest Houston metro, maintaining award-winning parks and infrastructure, and building a quality of life that keeps residents choosing to stay. That deliberate quality standard belongs in mental health care too. If PTSD, anxiety, or trauma has resisted conventional treatment, stellate ganglion block offers a biologically targeted intervention now backed by a level of institutional recognition that marks a turning point in the field: the VA system’s National Center for PTSD at Dartmouth and the Tibor Rubin VA Medical Center at Long Beach have launched a multi-site definitive trial specifically designed to establish SGB as a mainstream treatment option. Dr. Ho, board-certified anesthesiologist and former pediatrician, performs this ultrasound-guided procedure at Catalyst Health & Wellness for Missouri City residents and patients from Stafford, Sienna Plantation, Sugar Land, Pearland, and southwest Houston. Three Houston locations, open 5am–9pm, seven days a week.
Missouri City PTSD Treatment Gets Results
Missouri City residents tend to evaluate things carefully. In a community that spans Fort Bend and Harris counties, attracts engineers, healthcare professionals, and business owners from across the Houston metro, and consistently makes lists of Texas’s best-managed cities, people here apply high standards to every significant decision — including mental health treatment.
A 2025 clinical trial rationale paper published by Hollifield and colleagues from the VA Medical Center in Long Beach, James A. Haley Veterans Hospital in Tampa, University of Minnesota, and the National Center for PTSD at Dartmouth’s Geisel School of Medicine marks a milestone in how institutional medicine is beginning to treat stellate ganglion block. The multi-site VA study — recruiting across three major VA medical centers with methodological oversight from the National Center for PTSD — was specifically designed to provide “the evidence needed to determine if SGB is an effective intervention” in a study sufficiently powered to settle remaining questions. Their rationale cites SGB as showing “support for being a rapid and highly effective intervention from multiple case series” and notes that current evidence-based treatments for PTSD have “value and limitations, most notably slow response and high withdrawal rates.” When the National Center for PTSD invests in a definitive study of a specific intervention, it reflects institutional confidence in the mechanism — not a frontier experiment.
For Missouri City patients with PTSD or anxiety who’ve been waiting for a treatment with that level of institutional backing: it’s here, and it’s available now through Catalyst Health & Wellness.
What is Stellate Ganglion Block?
The stellate ganglion — a cluster of sympathetic nerves formed by the fusion of the inferior cervical and first thoracic ganglia at the base of the neck — relays sympathetic nerve signals from the brain’s central autonomic control centers to the head, neck, upper body, and cardiovascular system. In PTSD and anxiety, trauma drives elevated nerve growth factor, which causes sympathetic nerve fiber sprouting and chronically elevated norepinephrine, which maintains the amygdala in a state of persistent hyperarousal — the re-experiencing, avoidance, and hypervigilance that define daily life with PTSD.
Research consistently shows powerful results:
What Our Patients Say
How Stellate Ganglion Block Works
For Missouri City's professionally oriented community, the mechanism is worth explaining in full — including how it addresses the treatment barriers that keep PTSD undertreated.
Resetting the Sympathetic Nervous System
The four PTSD symptom clusters — re-experiencing, avoidance, negative mood alterations, and hyperarousal — all share a common biological substrate: an overactivated sympathetic nervous system maintaining elevated norepinephrine and amygdala hyperresponsiveness that the traumatic experience established and that the body cannot exit on its own. Nerve growth factor (NGF) drives sympathetic nerve sprouting after trauma, increasing the density of nerve fibers sending threat signals to the brain and keeping norepinephrine chronically elevated. Avoidance behaviors — staying away from people, places, and situations associated with the trauma — develop as the mind tries to reduce the frequency of sympathetic activation episodes. Negative mood alterations — emotional numbing, feeling distant, loss of positive emotion — reflect the sustained energetic cost of maintaining the hyperarousal state. All four clusters are downstream of the same biological root cause.
Hollifield and colleagues describe SGB's mechanism as addressing this root cause directly: by interrupting stellate ganglion nerve conduction, SGB reduces NGF, lowers norepinephrine production, and allows the amygdala's threat-detection calibration to reset toward a pre-trauma baseline. The cascade effect — where one autonomic system reset cascades into improvements across all four PTSD clusters — is why the VA's multi-site trial is measuring all four clusters, not just hyperarousal. The researchers expect to see comprehensive improvement because the mechanism is comprehensive.
Reducing Brain Inflammation and Hyperactivity
Beyond the sympathetic reset, SGB produces measurable changes in the brain's autonomic regulation network — reducing the hippocampal inflammation that contributes to fear memory consolidation, improving heart rate variability as a marker of autonomic balance, and recalibrating the amygdala's threat-detection sensitivity. Animal model research cited in recent SGB reviews documents that "SGB suppresses hippocampal microglia inflammation and enhances cognitive function" — suggesting that the procedure's anti-neuroinflammatory effects may contribute to the cognitive improvements patients report alongside the emotional symptom reductions.
For Missouri City patients who've found that trauma-focused psychotherapy dropout was a barrier — the 40% dropout rate in cognitive behavioral therapy for PTSD is well-documented in the Hollifield trial rationale — SGB offers something that doesn't require trauma disclosure or imaginal exposure. The biological reset happens independent of what the patient shares about their trauma history.
Conditions We Treat with Stellate Ganglion Block in Missouri City
SGB addresses sympathetic nervous system dysregulation across a range of conditions. At Catalyst Health & Wellness, we offer SGB for:
PTSD
Rapid relief from hyperarousal, hypervigilance, and trauma symptoms
Read MoreAnxiety Disorders
Reducing the physical manifestations of severe anxiety
Read MorePanic Disorder
Calming the fight-or-flight response that drives panic attacks
Read MoreCombat-Related Trauma
Extensively studied in military populations with strong results
Read MoreComplex Trauma
Addressing symptoms from prolonged or repeated traumatic experiences
Read MoreTrauma with Physical Symptoms
Especially effective when anxiety manifests physically
Read MoreSGB integrates powerfully with Catalyst's other treatments. Many Missouri City patients find that SGB's reset makes ketamine therapy, Spravato, or trauma-focused psychotherapy significantly more effective — the physiological barrier to engagement drops, and the therapeutic work becomes more accessible.
Your Stellate Ganglion Block Journey at Catalyst Health & Wellness
Every step has been structured for transparency, clinical rigor, and genuine accessibility for Missouri City patients with demanding professional and personal schedules.
Step 1: Free Phone Consultation
No cost, no commitment. A clinical team member discusses your symptoms, treatment history, and what you’re looking for. You receive an honest clinical assessment of whether SGB is appropriate for your situation — including if it isn’t.
Step 2: Medical Evaluation
Dr. Ho conducts a thorough pre-procedure evaluation: medical history, current medications, prior procedures, and contraindication review. Every question is addressed before any commitment is made.
Step 3: Day of Procedure
Budget two to three hours at the clinic. Arrange transportation — post-procedure driving isn’t advisable. Comfortable clothing with accessible collar area. Normal eating unless instructed otherwise.
Step 4: The SGB Procedure
Dr. Ho uses real-time ultrasound imaging to visualize the stellate ganglion and surrounding anatomy before needle placement. Skin is numbed first. The anesthetic is delivered under continuous imaging guidance. The injection takes approximately 15–20 minutes. Warmth, slight hoarseness, or a sense of physical release during the procedure confirm the block is working.
Step 5: Recovery & Observation
One to two hours of monitored recovery follows. Temporary Horner syndrome effects — drooping eyelid, hoarseness, warmth on the treated side — resolve within a few hours and confirm the stellate ganglion was successfully reached. Our team remains present throughout.
Step 6: Assessing Response & Follow-Up
Changes typically emerge within hours to days. Our team follows up to track response and determine next steps: a second procedure two weeks later, maintenance scheduling, or complementary treatment options at Catalyst.
The Science Behind Stellate Ganglion Block
A systematic review published in Chronic Stress examined 17 published studies on SGB for psychiatric disorders, finding preliminary evidence supporting feasibility for treating sympathetic nervous system dysregulation conditions. Improvements were observed within 5 minutes and lasted one month or longer.
The 2020 randomized controlled trial in JAMA Psychiatry enrolled 113 active-duty service members across three military hospitals. Two SGBs two weeks apart produced a mean PTSD symptom reduction of −12.6 points versus −6.1 for sham — establishing Level 1B clinical evidence for SGB.
The 2025 multi-site VA trial rationale published by Hollifield and colleagues in PubMed from the Tibor Rubin VA Medical Center (Long Beach), James A. Haley Veterans Hospital (Tampa), University of Minnesota, and National Center for PTSD (Dartmouth) represents the highest level of institutional investment in SGB to date. The trial is designed to be definitively powered to answer remaining questions about SGB’s efficacy, citing the procedure as showing “support for being a rapid and highly effective intervention from multiple case series” while noting that current evidence-based treatments suffer from “slow response and high withdrawal rates.” The trial measures all four PTSD symptom clusters — re-experiencing, avoidance, negative cognition/mood, and hyperarousal — reflecting the expectation of comprehensive benefit.
Key research findings:
- The VA’s National Center for PTSD at Dartmouth is now providing oversight for a multi-site definitive trial of SGB — representing the highest level of institutional validation the treatment has yet received
- Current evidence-based PTSD therapies have dropout rates approaching 40%; SGB’s biological mechanism requires no trauma disclosure, addressing a key barrier to treatment engagement that the VA trial specifically identifies
- The 2020 JAMA Psychiatry RCT established Level 1B evidence; the VA multi-site trial is designed to provide the definitive evidence that moves SGB from adjunctive to primary treatment consideration
- 70–83% of treated patients achieve clinically significant positive outcomes across the published evidence base; effects appear within minutes to hours and typically last one month or longer
Why Choose Catalyst Health & Wellness for Stellate Ganglion Block in Missouri City
01
Led by Dr. Ho – Anesthesiology Expertise
SGB requires nerve block anatomy knowledge, ultrasound guidance proficiency, and the clinical judgment to manage anesthetic delivery adjacent to major cervical vascular structures. Dr. Ho's board certification in anesthesiology covers these skills foundationally. The VA's multi-site trial specifically requires ultrasound-guided technique — the same standard Dr. Ho applies to every procedure at Catalyst. His former career as a pediatrician ensures precision is paired with genuine patient attentiveness. Missouri City's discerning professional population deserves that combination.
02
Ultrasound-Guided Precision
Every SGB at Catalyst uses real-time ultrasound imaging — the gold standard the VA’s definitive multi-site trial is using. Direct visualization of the stellate ganglion and surrounding anatomy before needle placement. No landmark estimation. This is the only approach Dr. Ho uses.
03
Whole-Person Approach
The Hollifield VA trial rationale specifically notes that SGB may benefit patients who “cannot or will not complete” trauma-focused therapies — patients for whom the dropout barrier has been real. Our team engages with your full picture: trauma history, prior treatment attempts, what has and hasn’t worked, and what your daily life looks like. Treatment plans reflect that complete assessment. What this means:
- Treatment shaped around your specific symptom profile and prior treatment history
- Active coordination with your existing therapist, psychiatrist, or VA provider
- Guidance on how SGB fits within a comprehensive approach — including therapy combination
- Ongoing clinical support extending beyond the procedure itself
04
Extended Hours & Flexible Scheduling
Missouri City straddles two counties and draws residents from across the southwest Houston corridor who manage demanding professional commutes, family obligations, and community involvement. Our 5am to 9pm hours, Monday through Sunday at all three Houston locations, eliminate scheduling as an obstacle. Pre-dawn appointments, evening sessions, weekend procedures — all available consistently.
05
Comprehensive Treatment Options
SGB works best as part of a comprehensive approach to trauma recovery. We offer additional treatments that can complement your care:
IV Ketamine Therapy
Rapid relief for PTSD, depression, and anxiety
IM Ketamine Therapy
Intramuscular ketamine for those who prefer this method
Spravato Treatment
FDA-approved nasal esketamine for treatment-resistant depression
TMS Therapy
Non-invasive brain stimulation for depression and OCD
Many patients find that combining SGB with ketamine therapy produces the most comprehensive relief from trauma symptoms.
06
Safe, Comfortable Environment
We understand that people with trauma need to feel safe. Every detail of our treatment environment has been designed with your comfort in mind. Our staff is trained in trauma-informed care, and we move at your pace throughout the entire process. You’ll never be rushed or pressured.
Getting Started with Stellate Ganglion Block in Missouri City
Missouri City’s “Safe, Scenic City” ethos reflects a community that invests in quality and takes its own wellbeing seriously. If PTSD, anxiety, or trauma has been the domain where the best available options have consistently fallen short — or where the treatment barriers (disclosure requirements, dropout-prone exposure therapies, slow medication onset) have prevented full engagement — SGB offers a biologically direct, evidence-supported path forward that the field’s most prestigious institutions are now taking seriously enough to study definitively.
Call (713) 772-5315 for your free consultation. We’ll discuss your history, answer every question at the level you expect, and give you a clear clinical assessment of whether SGB makes sense for your situation. No charge, no pressure, complete confidentiality.
Our Southwest clinic at 7710 Beechnut is the closest Catalyst location to Missouri City. All three locations open 5am to 9pm, every day of the week.
Monday-Sunday, 5am-9pm
Free consultation
Rapid relief
Three Houston locations
Expert anesthesiology care
Commonly Asked Questions
Get Help NowHow quickly does stellate ganglion block work?
Many patients notice improvement within days of the procedure, and some experience relief within minutes. Research shows that effects can appear within 5 minutes and last a month or longer. This rapid onset is one of SGB’s most remarkable features, especially for people who’ve been suffering with trauma symptoms for years.
Is stellate ganglion block safe?
Yes, SGB has been performed safely since the 1920s for various conditions. The procedure has a well-established safety profile with decades of clinical use. Common temporary effects include drooping eyelid, hoarse voice, and warmth on the treated side—all of which resolve within hours. Dr. Ho’s expertise as an anesthesiologist and use of ultrasound guidance ensures the highest safety standards.
Does the procedure hurt?
Most patients experience minimal discomfort. You’ll feel a small pinch from the initial numbing injection, followed by pressure as the medication is administered. The procedure itself takes only minutes, and most patients tolerate it very well. Dr. Ho’s gentle technique and experience help ensure your comfort.
How many SGB treatments will I need?
Many patients experience significant improvement after one or two treatments. Research protocols typically involve two SGBs administered two weeks apart. Some patients benefit from additional treatments over time. We’ll assess your response and recommend a treatment schedule based on your individual results.
How long do the effects last?
Effects typically last one month or longer, with some patients experiencing sustained improvement for many months. A 2025 study found that 96% of patients maintained significant improvement at 6-month follow-up. If symptoms return, the procedure can be repeated.
Can I combine SGB with other treatments?
Yes, many patients find that SGB works best as part of a comprehensive treatment approach. Combining SGB with ketamine therapy, for example, can provide both rapid sympathetic nervous system reset and enhanced neuroplasticity for processing trauma. SGB may also make traditional trauma therapy more tolerable and effective.
Do I need to talk about my trauma during treatment?
No. Unlike trauma-focused therapies that require detailed discussion of traumatic events, SGB works on the biological mechanisms underlying PTSD symptoms. You can share as much or as little as you’re comfortable with. The procedure addresses the physical hyperarousal component of trauma without requiring you to revisit painful memories.
Will insurance cover stellate ganglion block for PTSD?
Coverage varies by insurance plan. SGB for PTSD may be covered by some insurers, particularly when documented as treatment for a recognized condition with failed conventional treatments. We can help verify your benefits and discuss payment options during your consultation.
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