Can a Concussion Cause POTS? Dysautonomia After Head Injury

Can a Concussion Cause POTS or Dysautonomia?

Dysautonomia is the umbrella term for problems with the autonomic nervous system, the part that runs heart rate, blood pressure, digestion, sweating and temperature without you thinking about it. POTS is one form of dysautonomia. A 2026 review of autonomic care in sports-related concussion states that dysautonomia "is increasingly being recognized as a complication of concussion" (Vanood and Arca, 2026). The review's abstract describes the link without giving a rate.

How often a concussion leads to full POTS is a separate question. A 2026 controlled study gave 113 children aged 8 to 18 an active stand test 4 to 6 weeks after a mild traumatic brain injury. POTS criteria were met by 3 of the children with persisting symptoms (4.8%), none of the injured children whose symptoms had cleared and 1 healthy control child (4.2%), so the rate was about the same with or without the injury. Heart rate and blood pressure on standing didn't differ significantly between the groups either. The authors concluded that "POTS is not common nor overrepresented" in children with persisting post-concussion symptoms (Stein and Barlow, 2026).

4.8%of children with persisting symptoms met POTS criteria (3 children)

0injured children whose symptoms had cleared

4.2%of healthy control children (1 child)

A 2026 cohort study in adults tilted 597 people seen at concussion clinics within 3 months of their injury, at a median of 20 days, for 2 minutes. A heart rate rise or blood pressure drop meeting consensus thresholds showed up in 107 (17.9%), and new or worse symptoms on tilting in 347 (58.1%). The 2 overlapped in only 67 of the 387 people who had either, and the study had no control group (Sicard, 2026). A 2-minute tilt can't diagnose POTS, which needs a sustained rise over 10 minutes and symptoms for 3 months or more.

Studies in children and young people point the same way. In 451 children seen within 45 days of a concussion, 45 (about 10%) had a measurable heart rate or blood pressure change on standing and 103 of 445 (23%) had symptoms on standing, with little overlap; the authors wrote that this "might suggest these represent separate phenomena in pediatric concussion" (Sicard, 2025). In 268 concussion clinic patients aged 8 to 25, 7% had orthostatic tachycardia, and it was about as common across ages and sexes, which led the authors to suggest it "may be distinct from POTS" (Pearson, 2022).

Our team's position is that a missing POTS label doesn't mean the autonomic system is working well. Someone can fall short of POTS criteria on the day of a stand test and still have a heart rate and blood pressure system that's straining to keep the brain supplied. In the clinic's experience, the concussion patients who take the longest to heal tend to be the ones with autonomic symptoms. When the team reviews the history of people with long-standing dysautonomia, many of them turn out to have old injuries. Both are observations from the clinic's caseload, and no count stands behind them.

The question worth asking after a head injury, in the clinic's framing, is whether something has affected the function of your brain in a way that's changing what your nervous system does.

How Does a Concussion Change Heart Rate Control?

In our team's model, standing up is a reflex test. Gravity pulls blood toward your legs, and the brain uses feedback from the balance system and the body's pressure sensors to adjust heart rate and blood vessels. When those systems can't keep up after a concussion, dysautonomia starts to show.

A 2026 tilt-table study shows what that can look like in the first 2 weeks. Researchers compared 35 people tested within 14 days of a mild traumatic brain injury with 35 controls matched for age and sex during a 10-minute head-up tilt. The injured group had significantly lower heart rate and blood pressure variability, along with reduced low-frequency power of blood pressure and blunted pressure-sensor reflex responses. Variability is the beat-to-beat adjusting a healthy control system does, so our team reads less of it as a loop that's responding less. The same study found that the links between those autonomic measures and symptom severity scores were weak (Pelo, 2026), so how much the system changed didn't line up closely with how bad people felt.

Heart rate Blood pressure

Replay

In our team's view, the faster heart rate that can follow is often the body's rescue for brain blood flow after the injury. In that model, POTS is the rescue holding blood pressure, and orthostatic hypotension is the rescue falling short.

Acute concussion is known to bring a temporary drop in brain blood flow that usually recovers, as Andersson and colleagues note in the background of a 2026 study. What Happens When a Concussion Doesn't Heal covers the cases where it doesn't.

What Does POTS After a Concussion Look Like on a Heart Rate Monitor?

In one patient's story, a heart rate started racing and swinging right after a brain injury, rising and falling while they stood still with no activity at all. Heart rate runs on reflex, and in the clinic's model you can't will yourself to change it.

A small 2026 study measured the standing pattern in people who already had POTS and a chronic mild traumatic brain injury. In 10 of them, compared with 10 healthy people, static head-up tilts produced greater heart rate increases, with no group differences in blood pressure, stroke volume or cardiac output. On moving tilt and sled tests that stimulate the balance organs, some motion profiles drew larger blood pressure responses in the POTS group (Wynn, 2026). The study didn't test whether the POTS began with the injury. Our team reads a heart working harder while blood pressure holds as the compensation succeeding.

Heart rate variability shows changes outside of standing too. A 2026 scoping review screened 6,791 records and found 4 studies that measured heart rate variability during thinking and emotional tasks after adult concussion. Across them, people with concussion showed altered autonomic flexibility compared with controls, including blunted modulation, responses that differed with the emotional tone of the task and "compensatory increases in vagal activity." The authors note that differences in methods limited how well the studies could be compared (Boylan, 2026).

Heart rate spikes set off by eye movements are their own pattern, and Solving Post-Concussion Symptoms That Wouldn't Go Away walks through a case.

What Happens to Heart Rate During Exercise After a Concussion?

In a 2026 study of the Buffalo Concussion Treadmill Test, 21 adults with mild traumatic brain injury stopped at an average of 84.3% of their age-predicted maximum heart rate, compared with 90.0% in 17 healthy active adults and 89.3% in 14 healthy sedentary adults. Of the 21, 8 (38.1%) stopped because their symptoms got worse. Their heart rate also came down more slowly afterward, with fast-phase heart rate recovery averaging 44.5 beats per minute in the injured group and 69.6 in the healthy active group (Vuu, 2026).

Share of age-predicted maximum heart rate when the test stopped

Mild brain injury (21 adults)84.3%

Healthy active (17 adults)90.0%

Healthy sedentary (14 adults)89.3%

Fast-phase heart rate recovery after the test (beats per minute)

Mild brain injury (21 adults)44.5

Healthy active (17 adults)69.6

The authors read this pattern as a way to identify autonomic dysfunction on the treadmill test. Many in the injured group stopped because symptoms got worse, so the lower heart rate is a sign worth testing, and its cause still has to be found. Exercise intolerance and how to build activity back up are covered in Post-Concussion Syndrome Treatment: What Helps When Symptoms Last.

What Can Your Heart Rate Tell You After a Concussion?

In the clinic's view, a high or unstable heart rate after a concussion is a clear sign that something is wrong, and it doesn't tell you exactly what. In our team's model, the heart may be answering falling brain blood flow, a struggling balance system, the eyes or the demands of an overwhelmed brain.

Worsening headache, repeated vomiting, confusion or weakness after a head injury needs emergency care. Otherwise, start by clearing the heart itself. In that patient's story, an electrocardiogram found the heart normal. Our team's advice is to have a cardiologist check the heart first, then look at how the brain is controlling it, because a normal heart test and a disturbed autonomic system can exist together.

Medications that slow the heart or support blood pressure can help, and they can serve as a bridge while the regulation problem is addressed. They have a ceiling, because they manage the heart rate without changing how the brain controls it. Our team leaves existing medications alone at first, and any change is your prescriber's call.

That second step means measuring heart rate, blood pressure and brain blood flow while you're upright, to see which system is driving the rise. Autonomic Testing for POTS explains what each test measures, and Orthostatic Intolerance: Symptoms, Types and What Causes It covers the patterns those tests can find.

Where Should You Start After a Head Injury?

POTS After a Concussion: FAQ

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