Getting a POTS diagnosis can feel like a relief after months or years of being told your symptoms did not add up. But a diagnosis is really just a description of what is happening, a racing heart upon standing, dizziness, fatigue. It does not explain why your autonomic nervous system is misfiring in the first place. That deeper question matters, because understanding it changes what kind of care actually makes sense.
The Conventional Explanations
Traditional medicine points to a handful of overlapping factors in POTS: reduced blood volume, physical deconditioning after a period of illness or inactivity, autoimmune markers found in some patients, a genetic component that tends to run in families, and cases that follow a viral illness. These are all real pieces of the puzzle. What they do not fully explain is why the autonomic nervous system loses its ability to regulate blood flow and heart rate smoothly to begin with.
The Nervous System Layer
Underneath those conventional explanations sits the autonomic nervous system itself, the network responsible for regulating everything the body does without conscious thought, including heart rate, blood pressure, digestion, and temperature control. It runs on two branches. The sympathetic branch handles fight or flight, ramping the body up. The parasympathetic branch, driven largely by the vagus nerve, the longest cranial nerve in the body, handles rest, regulation, and recovery.
In a well regulated nervous system, these branches hand off to each other smoothly. Standing up triggers a small, automatic adjustment in blood vessel tone and heart rate to keep blood flowing properly to the brain. In POTS, that handoff does not happen cleanly. The body compensates with a racing heart instead of the coordinated vascular adjustment that should be happening in the background.
Physical Tension and Nervous System Signaling
One layer worth understanding is how physical tension in the upper neck and spine can interfere with the signaling pathways running through that area, including the vagus nerve itself. When tension builds in the cervical spine, whether from a birth injury, a fall, whiplash, or years of poor posture, it can disrupt the clear transmission of nervous system signals traveling between the brainstem and the organs that depend on them, including the heart and blood vessels involved in POTS.
How This Plays Out Symptom by Symptom
- Digestive complaints often trace back to reduced vagus nerve signaling to the gut, since that nerve directly regulates digestive motility
- Brain fog and fatigue often reflect reduced blood flow to the brain during the periods when the nervous system is not compensating well for postural changes
- Exercise intolerance tends to show up because a nervous system stuck leaning toward sympathetic dominance struggles to adapt to the increased blood flow demands that exercise requires
- Blood pooling in the legs happens when blood vessel constriction, normally an automatic nervous system function, does not engage properly upon standing
What Tends to Set This in Motion
A few patterns commonly show up as contributing factors:
- Chronic stress during pregnancy, which research links to increased stress reactivity in the developing nervous system
- Physical strain during birth, including forceps, vacuum extraction, or a prolonged labor, all of which place real mechanical stress on the upper neck and brainstem
- Early life stress or trauma that pushes the nervous system into a chronically activated pattern over time
- Repeated infections and antibiotic use, which can shift the gut microbiome and add to overall inflammation
- Hypermobility conditions, which frequently coexist with autonomic dysfunction
What Care Looks Like
Rather than only managing symptoms, our approach centers on restoring better communication within the autonomic nervous system itself. We start with your full history and a gentle exam, then use INSiGHT scanning to measure how your nervous system is actually functioning, including heart rate variability, rather than relying on guesswork. Using Koren Specific Technique and Talsky Tonal Chiropractic, our doctors work with light, nervous system focused contacts to ease tension in the areas where signaling tends to be disrupted, alongside practical support like hydration, gradual movement, and consistent sleep habits.
Tracking Progress
Keeping a simple symptom diary, noting dizzy spells, energy levels, and sleep quality, gives our doctors useful information to adjust your plan over time. Small, gradual improvements tend to be the norm rather than a single dramatic turning point, and every nervous system responds on its own timeline.
What This Means for Daily Life
Understanding the deeper nervous system layer behind POTS also changes how you might think about pacing your own days. Rather than pushing through a bad symptom day the same way you would push through ordinary fatigue, it helps to treat those days as information about where your nervous system currently sits. Building in rest before you are forced to, staying ahead of hydration rather than catching up after symptoms start, and keeping sleep as consistent as possible all give an already taxed autonomic nervous system fewer additional demands to juggle. None of this replaces addressing the underlying tension driving the pattern, but it does tend to make the day to day experience more manageable while that deeper work is underway.
It also helps to remember that POTS symptoms can shift from week to week, even day to day, as the nervous system responds to sleep, stress, hydration, and ordinary daily demands. A rough morning does not necessarily mean a setback in the bigger picture, and a good stretch does not mean the underlying pattern is fully resolved. Tracking the broader trend over weeks and months, rather than judging any single day on its own, tends to give a clearer and less discouraging picture of how your nervous system is actually responding over time.
Where to Go From Here
Understanding what is actually driving your autonomic nervous system to misfire is the first step toward a plan that addresses more than symptoms alone. Learn more about how we support POTS and dysautonomia, or get our free guide on the nervous system layer behind these symptoms. You can book online with our doctors in Royal Oak, or call us at (248) 616-0900 with any questions.
