What Is SGB? A Patient Guide to Stellate Ganglion Block for PTSD, Anxiety, and Nervous System Reset

If you have been searching for answers around PTSD treatment, anxiety relief, or ways to calm your nervous system, you may have come across something called a Stellate Ganglion Block (SGB). While the name can sound technical, the idea behind it is actually very intuitive.

Many people struggling with anxiety, PTSD, or chronic stress eventually realize that their symptoms are not just “in their head.” They are felt throughout the body. There is tension that never goes away, sleep that never feels restorative, and a constant sense of being on edge. Even when life appears calm on the outside, the body can remain stuck in a state of alert. SGB is a treatment designed to address that physical component directly.

Why Trauma and Chronic Stress Affect the Body

To understand why this matters, it helps to look at how the body responds to stress. The nervous system is built to protect you. When a threat is detected, your sympathetic nervous system activates, preparing you to fight or flee. This response increases heart rate, sharpens focus, and heightens awareness. In short bursts, it is incredibly helpful.

However, when stress is ongoing or when trauma has occurred, this system does not always return to baseline. Instead, it can remain activated, almost like a switch that cannot fully turn off. Over time, this can lead to symptoms such as chronic anxiety, hypervigilance, irritability, poor sleep, and difficulty relaxing. For some individuals, this pattern is part of post-traumatic stress disorder (PTSD), but many people experience similar symptoms even without a formal diagnosis.

How a Stellate Ganglion Block Works

A Stellate Ganglion Block (SGB) works by targeting a key control center within this stress response system. The stellate ganglion is a bundle of nerves located in the lower part of the neck, and it plays an important role in regulating sympathetic activity.

During the procedure, a small amount of local anesthetic is placed near this nerve bundle using precise ultrasound guidance. The goal is not to numb an area in the traditional sense, but to temporarily quiet the overactive signals that are keeping the body in a heightened state. By interrupting that cycle, the nervous system is given an opportunity to reset and return to a more balanced baseline.

Neuro Sympathetic Reset (NSR): An Advanced Approach to SGB

At Reset Medical & Wellness Center, this concept has been further developed into a more advanced approach called Neuro Sympathetic Reset, or NSR. While NSR is built on the same foundation as SGB, it is not simply a standard version of the procedure. It is a more comprehensive, trauma-informed model that focuses not only on the technical aspects of the injection, but also on how the entire experience supports healing. This includes how patients are prepared, how the procedure is performed, and what happens afterward.

From a technical perspective, NSR utilizes a dual-level approach that targets both the cervical sympathetic chain and the stellate ganglion. This allows for more complete modulation of the stress response, rather than focusing on a single point.

From a patient standpoint, the procedure itself is relatively simple. It is performed in an outpatient setting, and the injection typically takes only a few minutes, followed by a short period of monitoring. A temporary drooping of the eyelid on the treated side, sometimes accompanied by warmth in the face or arm, is expected and actually confirms that the medication has reached the intended area. These effects resolve on their own and are not harmful.

Want to see what the experience is actually like? Watch a full Neuro Sympathetic Reset (NSR) treatment video and see how quick, comfortable, and straightforward the procedure can be.

▶ Watch a Full NSR Treatment Video Here

Why Trauma-Informed Care Matters

Just as important as the procedure itself is how the care is delivered. In a trauma-informed approach, the entire experience is intentionally designed to feel safe, predictable, and supportive. Patients are guided step by step so there are no surprises, helping reduce anxiety even before treatment begins.

This carries through during the procedure, where the focus is not only on technical precision, but also on how the patient feels in the moment. The nervous system responds to the environment as much as the intervention, so creating a calm and grounded setting helps the body become more receptive to the reset.

After the procedure, the focus shifts to integration. Rather than viewing the block as a one-time solution, it becomes part of a broader healing process. As the nervous system settles, many patients find they can engage more effectively in therapy, mindfulness, exercise, and other supportive practices. This often creates a window where emotional processing feels more manageable and less overwhelming.

What Do Patients Experience After SGB?

Many patients describe a noticeable shift, often a sense of calm that feels unfamiliar after years of being on edge. Their minds feel quieter, their bodies more relaxed, and their reactions less intense. Sleep may improve, and daily stressors may feel easier to handle.

Life does not necessarily change overnight, but the way the body responds to it can, and that can make all the difference.

It is important to recognize that results vary. That said, dual-level sympathetic blocks, including the NSR approach, have shown encouraging outcomes, with approximately 80% of patients experiencing meaningful improvement in symptoms of PTSD and moderate-to-severe anxiety. The duration of benefit can range from months to years in some individuals, and treatment plans are individualized based on each patient's response and goals.

A Different Way of Thinking About Anxiety and PTSD

What makes this approach especially meaningful is the shift in how we think about conditions like anxiety and trauma. Traditional treatments often focus on thoughts, behaviors, or medications. While these can be effective, they do not always address the underlying physiological state of the nervous system.

SGB and NSR recognize that the body itself can become dysregulated. By helping the nervous system settle first, it often becomes easier for the mind to follow.

For many patients, this perspective is both validating and empowering. It helps explain why they may have struggled despite their best efforts, and it offers a new path forward. Instead of feeling stuck in a cycle of stress and reactivity, they are given a treatment that works directly with the body's stress response system, creating the opportunity for meaningful healing and growth.

Is SGB Right for You?

At its core, a Stellate Ganglion Block and the more advanced Neuro Sympathetic Reset are about restoring balance. They help shift the body out of a constant state of alert and create an opportunity for healing to occur. For individuals who feel like their nervous system has been stuck in overdrive, this can represent a meaningful turning point.

If you are exploring treatment options for PTSD, anxiety, chronic stress, or nervous system dysregulation, our team at Reset Medical & Wellness Center is here to help. Located in Strongsville, near Cleveland, we care for patients from throughout Ohio and across the United States seeking compassionate, evidence-based care focused on nervous system recovery.

Learn more about Neuro Sympathetic Reset (NSR), complete our intake form, or explore our clinical outcomes to see how a trauma-informed approach can help support meaningful recovery.

Michael Louwers, MD

Owner & Medical Director, Reset Medical & Wellness Center

Board Certified in Physical Medicine and Rehabilitation

Fellowship Certified in Interventional Pain Management