MCAS, POTS, and EDS: Understanding the Nervous System Connection

If you or someone in your family has been diagnosed with Mast Cell Activation Syndrome (MCAS), you likely know how exhausting and confusing it can be.

Many people with MCAS spend their days carefully managing symptoms — taking antihistamines, avoiding triggers, and constantly monitoring how their body reacts to foods, stress, temperature, or environmental changes.

You may experience symptoms like:

• flushing or hives
• digestive discomfort
• brain fog
• fatigue
• a racing heart
• unpredictable reactions

And perhaps the most frustrating part is hearing the same answer over and over again:

"We don’t really know why this is happening."

Many doctors focus on helping manage the symptoms. But very few conversations address a deeper question many people ask:

Why did the body become so reactive in the first place?

Looking Deeper: The Nervous System and Immune System

At New Hope Chiropractic, we often look at health through the lens of the nervous system.

Your nervous system is the body’s master control system. It helps regulate nearly every function in the body — including immune responses.

One of the key players in this process is the vagus nerve, which helps coordinate communication between the brain, immune system, heart, digestive system, and many other organs.

When the nervous system is balanced and adaptable, the body is better able to recognize what is safe and what is a true threat.

But when the nervous system becomes overwhelmed or stuck in a stress response, the body may begin reacting more strongly to things that would normally be tolerated.

Understanding the Stress Response

The autonomic nervous system has two main branches:

Sympathetic nervous system
(often called “fight or flight”)

Parasympathetic nervous system
(often called “rest and regulate”)

In a healthy system, these two states work together to help the body adapt to life’s challenges.

But when the body becomes stuck in a chronic stress response, it can create patterns of imbalance that affect many systems — including immune responses.

This type of nervous system imbalance is often referred to as dysautonomia, and it is frequently discussed alongside conditions like:

• MCAS
• POTS (Postural Orthostatic Tachycardia Syndrome)
• Ehlers-Danlos Syndrome (EDS)

While these conditions can appear different, they often share common patterns related to nervous system regulation.

The “Perfect Storm” of Stress

Many people who develop complex chronic conditions describe a long history of accumulated stress on the body.

This can include factors such as:

• stress during pregnancy
• birth challenges or early physical stress
• repeated illnesses or infections
• medications or antibiotic use
• digestive challenges
• chronic life stress

Over time, these layers of stress can influence how the nervous system adapts and regulates.

When the nervous system becomes overwhelmed, it may remain in a heightened stress state, which can affect immune signaling and inflammatory responses throughout the body.

Why Symptom Management Alone May Not Be Enough

Medications and symptom-management strategies can be helpful tools for many people with MCAS or related conditions.

However, these approaches often focus on calming symptoms after they appear.

At New Hope Chiropractic, we also ask a different question:

How well is the nervous system regulating and adapting?

If the nervous system remains stuck in a chronic stress response, it may continue sending signals that keep the body in a reactive state.

This is why some individuals continue searching for answers even after seeing multiple specialists.

A Neurological Perspective

At New Hope Chiropractic, we use advanced technology called Neurological INSiGHT Scans to assess how the nervous system is functioning.

These gentle, non-invasive scans help us evaluate:

• nervous system stress patterns
• muscle tension along the spine
• how well the body adapts to stress
• autonomic nervous system balance

These scans give us objective insight into how the nervous system is communicating with the body.

From there, our doctors develop a personalized care plan using Neurologically-Focused Chiropractic Care to support improved nervous system regulation.

The goal is not to treat specific conditions, but to help the nervous system function more efficiently so the body can better regulate and adapt.

Healing From the Inside Out

One encouraging thing we often see is that improvements in nervous system function can sometimes be measured before people notice changes in how they feel day to day.

As the nervous system becomes more balanced, many individuals report improvements in areas such as:

• resilience to stress
• sleep quality
• digestion
• energy levels
• overall well-being

Every person’s journey is different, but supporting the nervous system can be an important part of helping the body move toward greater balance.

You Are Not Broken

If you are living with MCAS, POTS, EDS, or other complex chronic health challenges, it can feel overwhelming.

But your body is not broken.

Often, the nervous system has simply become stuck in a pattern of stress and dysregulation.

The good news is that the nervous system has an incredible capacity to adapt and improve when given the right support.

Take the Next Step

If you’re ready to explore how your nervous system may be influencing your health, the team at New Hope Chiropractic would love to help.

The first step is a consultation and Neurological INSiGHT Scan so we can better understand how your nervous system is functioning and create a personalized plan of care.

👉 Schedule your appointment here:
https://www.newhopesc.com/schedule

If you are not local to Charleston, you can also search the PX Docs directory to find a neurologically-focused chiropractor near you.

Your body is designed to adapt, regulate, and heal.
Sometimes it simply needs the right support to get there.