Stellate Ganglion Block Complications: What You Should Know
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Maui Longevity RX
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November 3, 2025
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Maui Longevity RX
At Maui Longevity Rx, we specialize in stellate ganglion block (SGB) procedures designed to restore balance to the nervous system, reduce chronic stress, and support healing from trauma, anxiety, and other autonomic disorders. While SGB is generally safe and minimally invasive, it’s important for patients to understand potential complications, risks, and side effects to make informed decisions about their care.
In this article, we’ll explore the common and rare complications associated with stellate ganglion blocks, how they occur, and what Maui Longevity Rx does to ensure safe, effective treatment.
What Is a Stellate Ganglion Block?
A stellate ganglion block is a targeted injection of a local anesthetic into the stellate ganglion, a cluster of nerves in the neck that regulates the sympathetic nervous system. This part of the nervous system controls the body’s “fight-or-flight” responses as well as rest-and-recovery functions.
For patients with PTSD, chronic stress, anxiety, or certain pain conditions, the sympathetic nervous system can become overactive, creating persistent hyperarousal, inflammation, and disrupted autonomic function. By temporarily numbing the stellate ganglion, an SGB can reset nervous system activity, reducing excessive fight-or-flight responses and promoting balance throughout the body.
Why Understanding Stellate Ganglion Block Complications Matters
While SGB procedures are widely regarded as safe when performed by trained professionals, like those at Maui Longevity Rx, all medical procedures carry some level of risk. Understanding possible side effects, temporary reactions, and rare complications helps patients feel informed and confident in their treatment choices.
Knowing what to expect allows you to recognize normal responses versus issues that require medical attention.
What Are the Common Stellate Ganglion Block Side Effects?
Many patients experience mild, temporary effects after an SGB injection. These are typically short-lived and resolve within hours to days. Common side effects and minor complications include:
- Horner’s Syndrome – a temporary drooping eyelid, small pupil, or facial warmth on the treated side.
- Hoarseness or voice changes – caused by temporary irritation of nearby nerves.
- Facial flushing or redness – due to localized changes in circulation.
- Mild soreness or tenderness at the injection site.
- Dizziness or lightheadedness – sometimes experienced immediately after the procedure.
These reactions are normal, temporary, and usually resolve without intervention.

What Are the Rare but Serious Complications from Stellate Ganglion Block?
Though uncommon, SGB procedures carry potential risks that patients should be aware of. Maui Longevity Rx prioritizes safety by using ultrasound-guided injections and strict sterile protocols to minimize these risks. Rare complications include:
- Nerve Injury or Damage – temporary or, very rarely, persistent nerve effects may occur if the injection is not precisely placed.
- Vascular Injury – puncture of nearby blood vessels is rare but possible.
- Infection – as with any injection, there is a minimal risk of infection at the injection site.
- Allergic Reactions – though extremely rare, some patients may react to local anesthetics.
- Respiratory or Swallowing Difficulty – temporary due to proximity of nerves controlling the throat and airway.
Patients are closely monitored during and after the procedure to ensure any complications are addressed immediately.
Who Is at Higher Risk for SGB Complications?
While SGB is safe for most adults, certain factors may increase the risk of adverse reactions:
- Medical Conditions – patients with bleeding disorders, severe cardiovascular disease, or respiratory issues should discuss risks with their provider.
- Medication Use – blood thinners or certain prescription drugs may require adjustments prior to treatment.
- Previous Neck or Spinal Surgery – scar tissue can make injections more technically challenging.
At Maui Longevity Rx, our clinicians conduct comprehensive pre-procedure assessments to evaluate your individual risk factors and tailor your treatment safely.
How Are These Complications Prevented?
Preventing stellate ganglion block complications is a top priority at Maui Longevity Rx. Our safety protocols include:
- Ultrasound-Guided Injections – ensures precise placement and reduces the risk of nerve or vascular injury.
- Sterile Technique – minimizes the risk of infection.
- Individualized Dosing – treatment plans are customized to each patient’s anatomy, condition, and health status.
- Monitoring and Aftercare – patients are observed post-treatment to promptly address any unexpected reactions.
By following these guidelines, the likelihood of serious complications is extremely low.
How to Manage Side Effects if They Occur
If you experience minor side effects such as Horner’s syndrome, facial flushing, or mild soreness, these usually resolve within hours. Patients should:
- Rest for a short period after treatment.
- Monitor for symptoms that worsen or persist beyond 24 hours.
- Contact Maui Longevity Rx immediately if experiencing unusual pain, breathing difficulty, or significant swelling.
Prompt communication with your provider ensures that any issues are handled quickly and safely.
Balancing Risks and Benefits for Stellate Ganglion Block
Despite potential complications, many patients find that the benefits of stellate ganglion block therapy far outweigh the risks. Reported improvements include:
- Reduced PTSD symptoms, including hyperarousal, intrusive thoughts, and emotional dysregulation.
- Decreased anxiety, panic, and stress responses.
- Improved sleep quality and overall autonomic function.
- Relief from chronic pain conditions, including complex regional pain syndrome (CRPS).
- Enhanced cognitive clarity, memory, and focus.
Maui Longevity Rx emphasizes a personalized approach, ensuring that SGB procedures are performed safely and effectively to maximize therapeutic outcomes.
How Many SGB Treatments Are Typically Needed?
Most patients experience improvements within hours to days, though some may require multiple sessions for optimal results. The number of treatments varies based on:
- Condition being treated (PTSD, chronic pain, dysautonomia, etc.)
- Severity and duration of symptoms
- Individual response to the procedure
Your provider at Maui Longevity Rx will develop a customized treatment plan to balance safety, efficacy, and comfort.
Integrating SGB With Holistic Care on Maui
While SGB can provide rapid relief, long-term benefits are best achieved when paired with holistic care. Maui Longevity Rx encourages:
- Mental health support and counseling
- Stress management strategies
- Lifestyle adjustments, including diet, exercise, and sleep optimization
- Complementary treatments, such as IV nutrient therapy or regenerative medicine procedures
This integrated approach ensures sustainable results and minimizes the likelihood of recurring symptoms.

Is a Stellate Ganglion Block Right for You?
If you struggle with PTSD, chronic stress, anxiety, or chronic pain, a stellate ganglion block may help reset your nervous system and restore balance. Understanding potential complications ensures you are prepared and confident in your treatment choice.
At Maui Longevity Rx, we provide a comprehensive consultation to review your medical history, discuss risks and benefits, and determine if SGB is an appropriate option for your goals.
Scheduling and Pricing at Maui Longevity Rx
For patients interested in SGB therapy:
- First Treatment: $1,200
- Includes a 20-minute pre-treatment call with a physician.
- Subsequent Treatments: $975 per side/session
- Most protocols require 2–4 sessions for full therapeutic effect.
Pricing may vary depending on your treatment plan, and our team will provide a detailed explanation during your consultation.
Understanding Stellate Ganglion Block Complications
Stellate ganglion block therapy offers a minimally invasive, effective way to address nervous system dysregulation, chronic stress, and pain conditions. While minor and temporary side effects are common, serious complications are rare when the procedure is performed by trained professionals using advanced imaging and sterile protocols.
At Maui Longevity Rx, patient safety, personalized care, and optimal outcomes are our priorities. Understanding potential complications and risks empowers you to make informed decisions and approach SGB therapy with confidence.
Schedule a complimentary consultation with Maui Longevity Rx to learn how a stellate ganglion block can support your healing journey—safely, effectively, and with professional guidance every step of the way.