Stellate Ganglion Modulation Therapy - The Longevity Centers Of America

For individuals navigating the persistent burden of anxiety, post-traumatic stress, or chronic sympathetic overdrive, conventional treatment pathways do not always deliver adequate relief. Therapy and medication remain foundational components of mental health care, yet a growing body of clinical evidence points to an intervention that addresses the physiological roots of emotional distress rather than its symptoms alone.¹

At The Longevity Centers, our approach to mental wellness is grounded in the understanding that psychological health and physiological function are inseparable. When the nervous system becomes locked in a state of heightened activation, no amount of willpower or cognitive reframing can fully override the body’s alarm signals.

Stellate ganglion block (SGB) is emerging as one of the most compelling tools in integrative and longevity-focused medicine, offering a direct method of recalibrating the body’s stress response and restoring a measurable sense of calm. Our SGB therapy represents a precise, minimally invasive intervention that targets dysfunction at its source: the stellate ganglion, a cluster of sympathetic nerves located in the neck that plays a central role in the body’s fight-or-flight response.

Understanding the Stellate Ganglion

The stellate ganglion is a collection of sympathetic nerve cell bodies, or a sympathetic ganglion, situated at the level of the sixth and seventh cervical vertebrae, near the base of the neck. It serves as a key relay station within the sympathetic nervous system, which governs involuntary responses such as heart rate acceleration, pupil dilation, and the release of stress hormones like norepinephrine and cortisol.²

Under normal circumstances, the sympathetic nervous system activates in response to genuine threats and returns to baseline once the threat has passed. However, in individuals who have experienced trauma, prolonged stress, or chronic anxiety, this system can become dysregulated. The result is a nervous system that remains perpetually “switched on,” generating a cascade of stress signals even in the absence of any external danger. This phenomenon is sometimes described as a state of “sympathetic overdrive,” and it underlies many of the most debilitating symptoms associated with PTSD, generalized anxiety disorder, and related conditions. It is also linked to an increased risk of cardiovascular disease.³

How Stellate Ganglion Block Works

A stellate ganglion block (SGB) involves the injection of a local anesthetic, typically procaine, into the tissue surrounding the stellate ganglion. The procedure is performed under ultrasound or fluoroscopic guidance to ensure precision and safety. It is completed in a clinical setting and generally takes fewer than 15 minutes.

Once the anesthetic reaches the stellate ganglion, it temporarily inhibits sympathetic nerve signal transmission. This interruption effectively “resets” the overactive fight-or-flight response, allowing the nervous system to return to a more balanced state.

While the anesthetic itself wears off within hours, the therapeutic effects of the block often persist for weeks, months, or even longer. This lasting benefit occurs because the temporary interruption breaks the cycle of chronic sympathetic activation, enabling the nervous system to recalibrate and maintain a healthier baseline.

Key aspects of the SGB procedure include:

Ultrasound or fluoroscopic guidance for accuracy and patient safety
Use of a local anesthetic (commonly procaine) rather than systemic medication
Completion in approximately 10 to 15 minutes in an outpatient setting
Minimal downtime, with most patients resuming normal activities within 24 hours
A strong safety profile supported by decades of use in pain management

SGB and Mental Wellness: The Clinical Evidence

The application of SGB for mental wellness has gained significant traction over the past two decades, driven largely by research into its effects on PTSD among military service members and veterans. A landmark study published in 2014 demonstrated that SGB produced rapid, significant reductions in PTSD symptom severity, with effects that persisted well beyond the duration of the anesthetic itself.⁴ Since then, additional studies and clinical trials have continued to reinforce these findings.

The conditions and symptoms for which SGB has demonstrated clinical promise include:

Post-traumatic stress disorder (PTSD) and complex PTSD
Generalized anxiety disorder and panic-related symptoms
Chronic stress and sympathetic nervous system dysregulation
Trauma-related sleep disturbances, including hypervigilance-driven insomnia
Emotional blunting or dissociation associated with long-term nervous system overactivation
Hot flashes and vasomotor symptoms related to hormonal transitions

What distinguishes SGB from many conventional approaches to mental health treatment is its mechanism of action. Rather than modulating neurotransmitter levels in the brain, as most psychiatric medications do, SGB directly targets the peripheral sympathetic nervous system. This means it addresses the physiological component of the stress response—the racing heart, the tight chest, the constant sense of threat—in a way that cognitive and pharmacological therapies may not fully achieve on their own.It is important to note that SGB is not positioned as a replacement for psychotherapy, medication, or other established modalities. It is, rather, a complementary intervention that can create the physiological conditions under which other treatments become more effective. When the body is no longer locked in survival mode, patients frequently report that therapy becomes more productive, emotional regulation becomes more accessible, and overall quality of life improves substantially.

What to Expect During and a SGB Procedure

Patients considering SGB at The Longevity Centers can expect a thorough evaluation before the procedure, including a review of medical history, current symptoms, and treatment goals. The procedure itself involves the following general steps:

The patient is positioned comfortably, typically seated or slightly reclined
The treatment area on the neck is cleaned and prepared
Ultrasound imaging is used to visualize the stellate ganglion and surrounding structures
A fine needle is advanced to the target area under continuous image guidance
A small volume of local anesthetic is injected around the ganglion
The needle is removed, and the patient is monitored for a brief observation period

Note that we do one side of the body on the first visit, then the patient returns the next day for the second application. Both injections are followed by a procaine IV, in order to amplify the effects of the treatment.

Following the injection, patients may notice several immediate effects, including a sensation of warmth on the treated side of the face, mild drooping of the eyelid (a temporary and expected sign known as Horner’s syndrome), and a feeling of calm or emotional relief. These signs typically confirm that the block has been successfully placed.

Most patients are able to leave the clinic within 60 to 90 minutes and resume normal activities the following day. Some individuals experience noticeable improvement in anxiety and stress levels within hours of the procedure, while for others the full benefit develops over the course of several days.

The duration of relief varies, with many patients reporting sustained improvement for several months. In cases where symptoms gradually return, repeat procedures can be performed safely.

Who Is a Candidate for SGB?

SGB may be appropriate for individuals who experience persistent symptoms of sympathetic nervous system overactivation that have not been fully resolved by other interventions. Potential candidates include those who:

Have been diagnosed with PTSD, complex PTSD, or trauma-related anxiety
Experience chronic anxiety with prominent physical symptoms such as elevated heart rate, muscle tension, or hypervigilance
Have found limited or incomplete relief through medication and psychotherapy alone
Are seeking a minimally invasive option with a well-established safety profile
Want to address the physiological underpinnings of emotional distress as part of a comprehensive wellness plan

A thorough consultation is essential to determine candidacy. Certain medical conditions, such as bleeding disorders, active infection at the injection site, or specific cardiac conditions, may preclude the procedure. The experienced clinical team at The Longevity Centers conducts a detailed assessment to ensure that SGB is both safe and appropriate for each individual patient.

Frequently Asked Questions About Stellate Ganglion Block (SGB)

How does SGB differ from traditional anxiety or PTSD medications?

SGB works by temporarily blocking sympathetic nerve activity in the stellate ganglion, directly addressing the body’s overactive fight-or-flight response. Unlike medications that alter neurotransmitter levels in the brain, SGB targets the peripheral nervous system. This distinction means it can relieve the physical symptoms of stress and anxiety, such as elevated heart rate and hypervigilance, in a way that complements, rather than duplicates, the effects of psychiatric medication.

Is the SGB procedure painful?

Most patients describe the procedure as involving only mild discomfort, comparable to a standard injection. The use of ultrasound guidance allows for precise needle placement, which minimizes the chances of tissue disruption. A brief sensation of pressure is common during the injection, but significant pain is rare. The entire procedure is typically completed in under 15 minutes.

How long do the effects of SGB last?

The duration of benefit varies among individuals, but many patients report sustained relief from anxiety and stress-related symptoms for several weeks to many months following a single dual-sided injection. Some patients experience longer-lasting effects, particularly when SGB is combined with ongoing therapeutic support. Repeat procedures can be performed safely if symptoms gradually return.

Can SGB be combined with other treatments at The Longevity Centers?

Yes. SGB is designed to integrate seamlessly with other modalities offered at The Longevity Centers, including IV therapy, hormone optimization, regenerative medicine, and advanced diagnostic assessments. Addressing nervous system dysregulation through SGB can enhance the effectiveness of these complementary treatments by reducing the systemic stress burden that often impedes recovery and optimization.

References

Natalie C. Momen, Søren Dinesen Østergaard, Uffe Heide‐Jorgensen, et al., “Associations between physical diseases and subsequent mental disorders: a longitudinal study in a population‐based cohort,” World Psychiatry, September 2024, https://pmc.ncbi.nlm.nih.gov/articles/PMC11403178/
Mayank Mehrotra, Vamsi Reddy, and Paramvir Singh, “Neuroanatomy, Stellate Ganglion,” National Center of Biotechnology Information, National Library of Medicine, July 2023, https://www.ncbi.nlm.nih.gov/books/NBK539807/.
“Sympathetic Nervous System (SNS),” Cleveland Clinic, June 2022, https://pubmed.ncbi.nlm.nih.gov/40998195/.
Kim Peterson, MS; Donald Bourne, BS; Johanna Anderson, MPH; et al., “Evidence Brief: Effectiveness of Stellate Ganglion Block for Treatment of Posttraumatic Stress Disorder (PTSD),” U.S. Department of Veterans Affairs, February 2017, https://www.ncbi.nlm.nih.gov/books/NBK442253/.