POTS is not, at its root, a heart problem.
That's worth establishing first, because it changes where you look.
The racing pulse when you stand up is not your heart malfunctioning. Your heart is doing what it's told. It's responding — often overresponding — to instructions from the system that regulates it. That system is the autonomic nervous system, and [POTS](condition-pots.html) is formally classified as a dysautonomia: a dysfunction of autonomic control.
The name of the category tells you where to look. Not at the organ. At the regulation.
Why Does That Distinction Change the Approach?
If you understand POTS as a cardiovascular problem, you aim everything at the cardiovascular system. Slow the heart rate. Expand blood volume. Add salt, fluids, compression garments.
None of that is wrong. Within a cardiology framework, it's competent and careful medicine, and for someone who is fainting it can be genuinely necessary.
But it's aimed at the symptom, because the symptom is what's closest to the complaint. It leaves the actual question — why is autonomic regulation failing? — untouched.
What Happens If You Follow the Signal Upstream?
So follow it upstream.
Autonomic function is largely regulated by the brainstem. The brainstem is mission control for everything you never think about: heart rate, blood pressure, breathing, and the moment-to-moment adjustments that keep you upright and conscious when you stand.
The brainstem does not sit in isolation. It occupies the very top of the spinal column, directly above the first two vertebrae of your neck. A great deal of the signaling that governs autonomic control passes through that region.
And that region has a specific problem. The upper cervical spine is the most mobile and least mechanically stable segment of the entire spine. It carries the weight of your head on a small, finely balanced joint complex with no intervertebral discs, held together primarily by ligaments. It sits closer to the brainstem than any other structure in your body.
When something disturbs that area structurally, expecting it to disturb the signaling passing through it is not a stretch. It's straightforward physiology.
What Does the Research Actually Support?
I want to be exact about the state of the evidence, because this is where claims about POTS usually get overstated.
What is well established is that head injury disturbs autonomic function. A systematic review of 36 studies of autonomic measures after concussion found abnormalities in all but three of them (Pertab et al., 2018). That is a robust finding.
There is also a documented association between head trauma and POTS specifically. Clinic data from a large pediatric institution indicate that 11.4% of individuals diagnosed with POTS report symptom onset within three months of a concussion (Miranda et al., 2018). That figure describes the share of POTS patients with post-concussion onset — it is not the rate of POTS after concussion, and reversing it would be a serious misreading. A small case series has separately described POTS confirmed on tilt-table testing following traumatic brain injury (Kanjwal et al., 2010).
What is **not** established is the next step. I could not point you to a controlled study, cohort, or trial demonstrating that craniocervical misalignment causes POTS, or that correcting it resolves POTS. That literature does not exist yet, and anyone who tells you otherwise is overstating.
What Do I See Clinically?
Here is my own observation, offered as exactly that.
In nearly every POTS patient I have personally worked with, there has been a structural misalignment at the craniocervical junction. And when we take the history back far enough, it frequently lands on a specific event — a fall from a horse, a gymnastics landing that went wrong, a car accident, a concussion. Often years before the POTS had a name.
That is a clinical observation from my own practice. It is not a controlled study and I'm not presenting it as one.
POTS is also heterogeneous. There are post-viral forms, blood-volume forms, forms tied to connective tissue conditions. I am not claiming the neck explains all of it, and anyone who tells you a single cause explains every case of POTS is overselling.
What I am claiming is narrower: that one potential driver is being systematically missed.
Why Does It Get Missed?
The mechanics explain the gap.
An impact forceful enough to concuss a brain [delivers a whiplash-grade load to the neck in the same instant](post-why-whiplash-and-concussion-produce-the-same-symptoms.html). Force does not stop politely at the skull. And the thresholds are dramatically different — reconstructed concussions in football cluster near 100 Gs of head acceleration, while cervical ligamentous injury begins at a small fraction of that.
Yet the standard response is to image the brain, confirm there's no bleed, clear the patient, and send them home. The structure that was far more likely to be damaged is rarely examined.
Then years pass. The connection between an old accident and a new diagnosis isn't obvious to anyone, because nobody was told the two might be related. By the time POTS is diagnosed, the injury is ancient history and nobody thinks to ask about it.
What Is the Question Worth Putting on the Table?
So here's where I'd leave it.
If you have POTS, and somewhere in your history there's a fall, a hit, a concussion, or a [whiplash](condition-whiplash.html), the upper neck is a question worth raising. Not because it's guaranteed to be your answer, but because it's a potential driver that almost nobody checks — and you cannot resolve what was never investigated.
That's a specific, answerable question. It requires examining the craniocervical junction directly, with imaging built to show alignment and stability rather than fractures and bleeds, and correlating what's found against your symptoms and your history.
The chain from a racing heart back to an old injury isn't long. It just requires someone willing to walk it.
If nobody has walked it with you yet, that isn't cause for despair. It's cause for the specific, grounded kind of hope that comes from finding a cause you can actually do something about.
Is There an Injury Somewhere in Your History?
If you have POTS and there's a fall, a concussion, or a whiplash somewhere in your past, the craniocervical junction is worth putting on the table as a possible driver.
That kind of root-cause investigation is the work we do at Cerebral. If you'd like someone to walk that chain back with you, we're here.
References
- Pertab JL, Merkley TL, Cramond AJ, et al. Concussion and the autonomic nervous system: an introduction to the field and the results of a systematic review. *NeuroRehabilitation*. 2018;42(4):397–427. https://pubmed.ncbi.nlm.nih.gov/29660949/
- Miranda NA, Boris JR, Kouvel KM, et al. Activity and exercise intolerance after concussion: identification and management of postural orthostatic tachycardia syndrome. *Journal of Neurologic Physical Therapy*. 2018;42(3):163–171. https://pubmed.ncbi.nlm.nih.gov/29864098/
- Kanjwal K, Karabin B, Kanjwal Y, et al. Autonomic dysfunction presenting as postural tachycardia syndrome following traumatic brain injury. *Cardiology Journal*. 2010;17(5):482–487. https://pubmed.ncbi.nlm.nih.gov/20865679/