{"id":16094,"date":"2026-11-10T06:00:00","date_gmt":"2026-11-10T11:00:00","guid":{"rendered":"https:\/\/cov19longhaulfoundation.org\/?p=16094"},"modified":"2026-09-14T16:29:17","modified_gmt":"2026-09-14T20:29:17","slug":"the-moment-the-road-disappears","status":"publish","type":"post","link":"https:\/\/cov19longhaulfoundation.org\/?p=16094","title":{"rendered":"The Moment the Road Disappears"},"content":{"rendered":"\n
COVID-19 can affect the heart, lungs and autonomic nervous system. For some patients, the most frightening consequence may be the few seconds when consciousness simply vanishes \u2014 sometimes at 60 miles an hour.<\/em><\/strong><\/h5>\n\n\n\n

John Murphy, CEO The COVID-19 Long haul Foundation<\/p>\n\n\n\n

There is a particular terror in a blackout that is difficult to convey to anyone who has never experienced one.<\/p>\n\n\n\n

There is no warning in the conventional sense. There is no gradual realization that something is wrong, no opportunity to pull onto the shoulder. One moment there is a road, a steering wheel, the familiar rhythm of traffic. Then there is nothing.<\/p>\n\n\n\n

And then, perhaps, there is the sound of metal folding.<\/p>\n\n\n\n

For a driver, transient loss of consciousness is among the most consequential medical events imaginable. A human being can survive being confused, dizzy, fatigued or cognitively impaired behind the wheel. A driver who becomes completely unconscious cannot.<\/p>\n\n\n\n

The emergence of COVID-19 has added a complicated new dimension to this old problem. SARS-CoV-2 is principally thought of as a respiratory virus, but the pandemic produced abundant evidence of cardiovascular, neurological and autonomic disturbances. Among the phenomena reported in infected patients are syncope \u2014 the medical term for fainting or transient loss of consciousness \u2014 presyncope, cardiac arrhythmias, orthostatic intolerance and what physicians came to call \u201csilent hypoxemia,\u201d dangerously low oxygen levels without the degree of breathlessness one might expect.<\/p>\n\n\n\n

The crucial question is not whether every blackout after COVID is caused by the virus. It plainly is not.<\/p>\n\n\n\n

The more important question is whether the medical system has adequately recognized that a person recovering from COVID who suddenly loses consciousness may represent a traffic-safety problem as well as a medical problem.<\/strong><\/p>\n\n\n\n

The answer is less reassuring.<\/p>\n\n\n\n

The crash that began with an unexplained blackout<\/h5>\n\n\n\n

One of the clearest published cases involves a 62-year-old man who appeared to have relatively mild COVID-19.<\/p>\n\n\n\n

He had diabetes and hypertension but no known history of seizures or previous syncope. While driving, he suddenly lost consciousness and crashed his vehicle. He denied chest pain, shortness of breath, palpitations, visual disturbance or the warning symptoms that commonly precede fainting.<\/p>\n\n\n\n

The hospital investigation eventually revealed something extraordinary: episodes of cardiac arrest caused by prolonged asystole \u2014 at times lasting approximately 30 seconds. The patient had recently had an asymptomatic SARS-CoV-2 infection. Recurrent episodes ultimately required implantation of a permanent pacemaker.<\/p>\n\n\n\n

The significance of this case is not that it proves COVID caused the crash. A single case cannot do that.<\/p>\n\n\n\n

It is that the patient’s loss of consciousness initially looked inexplicable.<\/p>\n\n\n\n

There was no dramatic respiratory crisis. No obvious warning. No history of seizures. He simply disappeared from consciousness while operating a motor vehicle.<\/p>\n\n\n\n

That is precisely the sort of event that can transform an ordinary commute into a fatal collision.<\/p>\n\n\n\n

A man on the road home<\/h5>\n\n\n\n

Another account comes from Gateway Rehabilitation Hospital in Kentucky.<\/p>\n\n\n\n

Joe Matthews was returning home from Florida after becoming ill. While driving near the Georgia-Tennessee border, he blacked out and crashed. The collision nearly killed him and severely crushed his arm. According to the rehabilitation center’s account, he was subsequently diagnosed with COVID-19 and pneumonia, and physicians attributed his blackout to the severe pneumonia. He required mechanical ventilation and spent roughly two months in a Tennessee hospital before beginning rehabilitation.<\/p>\n\n\n\n

The story is remarkable partly because of what happened afterward: his arm was nearly amputated, he required a ventilator, tracheostomy and feeding tube, and yet eventually he walked again and returned home.<\/p>\n\n\n\n

But the crash itself raises an uncomfortable question.<\/p>\n\n\n\n

How many people who become suddenly incapacitated while driving ever receive a diagnosis explaining why?<\/p>\n\n\n\n

And how many crashes are simply recorded as single-vehicle collisions?<\/p>\n\n\n\n

Traffic investigators generally reconstruct what happened to the vehicle. Medicine must reconstruct what happened to the driver.<\/p>\n\n\n\n

Those are not always the same investigation.<\/p>\n\n\n\n

A court record offers another window<\/h5>\n\n\n\n

An Iowa Supreme Court case provides an unusually detailed account because the driver’s explanation became part of a criminal proceeding.<\/p>\n\n\n\n

David Jackson had recently been quarantined following possible COVID-19 exposure. He testified that he had experienced several previous blackouts around the period in which he became ill. On Aug. 9, 2020, he was driving toward a medical center when he developed chest tightness, his breathing became restricted and, in his words, he \u201cpassed out, blacked out at the wheel.\u201d His next memory was the collision.<\/p>\n\n\n\n

There was, however, another complicating factor: Jackson acknowledged taking an ecstasy pill two or three days earlier, and the prosecution argued that drug impairment rather than a medical condition explained the fatal crash. The Iowa Supreme Court ultimately described substantial evidence supporting the prosecution’s position.<\/p>\n\n\n\n

That case illustrates why attributing a crash to COVID is extraordinarily difficult.<\/p>\n\n\n\n

A driver may have COVID.<\/p>\n\n\n\n

A driver may lose consciousness.<\/p>\n\n\n\n

A crash may follow.<\/p>\n\n\n\n

None of those facts alone proves causation.<\/p>\n\n\n\n

The medical investigator must consider arrhythmia, hypoxemia, dehydration, medications, drugs, epilepsy, metabolic abnormalities, orthostatic hypotension, sleep disorders and dozens of other possibilities.<\/p>\n\n\n\n

But the converse is also important: the existence of competing explanations does not make COVID irrelevant.<\/strong><\/p>\n\n\n\n

What does COVID have to do with fainting?<\/h5>\n\n\n\n

Syncope occurs when cerebral perfusion temporarily falls sufficiently to cause loss of consciousness. The mechanisms are diverse.<\/p>\n\n\n\n

The heart may suddenly beat too slowly or too rapidly. Blood pressure may collapse. The autonomic nervous system may fail to compensate when a person stands. Blood volume may be inadequate. Oxygen delivery may fall. A neurological event may interfere with consciousness.<\/p>\n\n\n\n

COVID-19 has been implicated in several of these physiological pathways.<\/p>\n\n\n\n

A 2021 review specifically examined reports of syncope and presyncope in COVID-19 alongside \u201csilent hypoxemia\u201d \u2014 low blood oxygen without proportionate subjective breathlessness. The authors noted that the autonomic nervous system regulates blood pressure and blood-gas homeostasis and argued that SARS-CoV-2 might, in at least some patients, interfere with autonomic function. They emphasized, however, that evidence was still insufficient to establish that these phenomena were uniquely associated with COVID rather than severe viral illness generally.<\/p>\n\n\n\n

That qualification matters.<\/p>\n\n\n\n

Medicine should not convert a plausible mechanism into a proven diagnosis.<\/p>\n\n\n\n

But it should not ignore the mechanism, either.<\/p>\n\n\n\n

The autonomic nervous system: the invisible driver<\/h5>\n\n\n\n

The autonomic nervous system is the body’s largely unconscious control system.<\/p>\n\n\n\n

It regulates blood pressure, heart rate, vascular tone, respiration and the rapid adjustments required when a person changes posture or experiences physiological stress.<\/p>\n\n\n\n

If it malfunctions, a person may experience dizziness, rapid heartbeat, profound fatigue, exercise intolerance, orthostatic intolerance or syncope.<\/p>\n\n\n\n

This became particularly relevant during the emergence of Long COVID.<\/p>\n\n\n\n

Researchers began reporting patients who developed persistent autonomic abnormalities after apparently uncomplicated infections. Some experienced profound tachycardia when standing; others developed blood-pressure instability or episodes of presyncope. Still others described abrupt neurological symptoms.<\/p>\n\n\n\n

The possibility that COVID can affect autonomic regulation is therefore not a fringe hypothesis. It is an active field of research.<\/p>\n\n\n\n

The unresolved question is how frequently these abnormalities are severe enough to cause actual loss of consciousness.<\/p>\n\n\n\n

That distinction becomes critical when the patient is driving.<\/p>\n\n\n\n

Silent hypoxemia creates another problem<\/h5>\n\n\n\n

Respiratory disease creates a different pathway.<\/p>\n\n\n\n

A person whose oxygen saturation falls dramatically ordinarily might be expected to become conspicuously short of breath. COVID sometimes produced a peculiar phenomenon in which oxygen levels were dangerously low while the patient’s subjective sensation of breathlessness was surprisingly modest.<\/p>\n\n\n\n

That phenomenon became known as silent hypoxemia.<\/p>\n\n\n\n

For a pedestrian, silent hypoxemia is dangerous.<\/p>\n\n\n\n

For a driver, it can be catastrophic.<\/p>\n\n\n\n

A person who believes he is sufficiently well to drive may experience impaired attention, slowed reaction time, confusion or, if cerebral oxygen delivery falls far enough, loss of consciousness.<\/p>\n\n\n\n

The important point is that the driver does not necessarily have to feel dramatically ill before becoming unsafe.<\/p>\n\n\n\n

The numbers are beginning to tell a larger story<\/h5>\n\n\n\n

A 2025 study in PLOS Global Public Health<\/em> examined COVID-19 rates and automobile crashes across seven U.S. states using population-level data from 2020 through 2022. The investigators reported an association between acute COVID-19 positivity and subsequent crash frequency, estimating an odds ratio of approximately 1.25 \u2014 a 25 percent increase in crash risk.<\/p>\n\n\n\n

That is potentially important.<\/p>\n\n\n\n

But it is not proof that COVID makes individual drivers black out.<\/p>\n\n\n\n

The study did not establish that the people who crashed had COVID at the moment of their collisions. Its analysis used population-level infection and crash data. The authors themselves acknowledged that limitation and called for prospective and case-control studies.<\/p>\n\n\n\n

Still, the finding is provocative because it points in the same direction as the case reports.<\/p>\n\n\n\n

There may be a relationship between infection and road safety that has been largely overlooked.<\/p>\n\n\n\n

But the pandemic itself changed driving<\/h5>\n\n\n\n

There is another statistical trap.<\/p>\n\n\n\n

During the first months of the pandemic, people stopped driving.<\/p>\n\n\n\n

Traffic volumes collapsed. Offices closed. Schools closed. Restaurants closed. Millions of Americans stayed home.<\/p>\n\n\n\n

Naturally, automobile crashes declined.<\/p>\n\n\n\n

Later, as restrictions were lifted, traffic returned, often accompanied by higher speeds and altered driving behavior.<\/p>\n\n\n\n

Consequently, simply plotting COVID cases against automobile accidents can produce misleading correlations.<\/p>\n\n\n\n

The question is not whether more COVID coincided with more crashes.<\/p>\n\n\n\n

It is whether infection itself changed the physiological ability of drivers to operate vehicles safely.<\/p>\n\n\n\n

That question remains insufficiently answered.<\/p>\n\n\n\n

The black-box problem<\/h5>\n\n\n\n

There is a profound difference between a driver who says, \u201cI was distracted,\u201d and one who says, \u201cI don’t remember the crash.\u201d<\/p>\n\n\n\n

The latter demands a medical investigation.<\/p>\n\n\n\n

Yet crash databases are not designed primarily to detect transient neurological or cardiovascular events.<\/p>\n\n\n\n

Police reports may say \u201clost control,\u201d \u201cfailed to maintain lane,\u201d \u201csingle vehicle,\u201d \u201cdriver stated he blacked out,\u201d or \u201cmedical emergency.\u201d<\/p>\n\n\n\n

Those descriptions are useful, but they are not diagnoses.<\/p>\n\n\n\n

A police officer can determine where the vehicle went.<\/p>\n\n\n\n

A cardiologist may determine why.<\/p>\n\n\n\n

The two systems do not routinely communicate.<\/p>\n\n\n\n

This produces a potential epidemiological blind spot: the crash is counted, but the underlying medical event may disappear into the narrative.<\/strong><\/p>\n\n\n\n

A police report from the pandemic illustrates the problem<\/h5>\n\n\n\n

During the first COVID wave, the Lincoln Park, New Jersey, Police Department investigated a single-car crash in which the driver passed out and struck a wooden pole.<\/p>\n\n\n\n

Police initially attributed the episode to prolonged use of an N95 mask, stating that the driver had worn it for several hours and subsequently lost consciousness. The department later modified its statement, emphasizing that officers were not physicians and that another medical explanation could not be excluded. Police also reported that the driver was not apparently impaired by drugs or alcohol.<\/p>\n\n\n\n

This episode became a national news story.<\/p>\n\n\n\n

It should also be remembered as an example of something more fundamental.<\/p>\n\n\n\n

The first explanation offered at an accident scene is not necessarily the correct one.<\/strong><\/p>\n\n\n\n

The mask theory became controversial because there was little evidence that a properly functioning N95 respirator causes a healthy person to become hypoxic while driving.<\/p>\n\n\n\n

The police department itself ultimately acknowledged uncertainty.<\/p>\n\n\n\n

That uncertainty is exactly what a good medical investigation should preserve.<\/p>\n\n\n\n

A more mundane explanation may sometimes be the correct one<\/h5>\n\n\n\n

Syncope existed long before COVID.<\/p>\n\n\n\n

It remains common.<\/p>\n\n\n\n

Studies of patients with syncope have found many causes, including neurally mediated fainting and cardiac arrhythmias. One clinical series involving thousands of patients found that nearly 10 percent had experienced syncope while driving; neurally mediated syncope accounted for 37.3 percent of cases and cardiac arrhythmias for 11.8 percent.<\/p>\n\n\n\n

And syncope can cause devastating crashes even without COVID.<\/p>\n\n\n\n

A published case from 2002 described a 60-year-old man who suffered a serious motor vehicle accident after complete loss of consciousness attributed to vasovagal syncope.<\/p>\n\n\n\n

This is why COVID should not become a convenient explanation for every unexplained accident.<\/p>\n\n\n\n

The proper question is not:<\/p>\n\n\n\n

Did the patient have COVID?<\/strong><\/p>\n\n\n\n

It is:<\/p>\n\n\n\n

What physiological event caused the loss of consciousness?<\/strong><\/p>\n\n\n\n

The stakes are enormous<\/h5>\n\n\n\n

Syncope while driving is not merely a personal medical problem.<\/p>\n\n\n\n

It is a public-safety problem.<\/p>\n\n\n\n

A driver traveling at 55 miles per hour covers approximately 81 feet every second.<\/p>\n\n\n\n

A five-second blackout therefore represents roughly 400 feet of uncontrolled travel.<\/p>\n\n\n\n

A ten-second blackout represents more than 800 feet.<\/p>\n\n\n\n

At highway speed, consciousness does not have to disappear for very long.<\/p>\n\n\n\n

The road itself becomes a projectile.<\/p>\n\n\n\n

Medical organizations have long recognized this danger. National guidance on medical conditions and driving has treated unpredictable spontaneous loss of consciousness as incompatible with safe driving and recommends restrictions following unexplained syncope until recurrence risk has been evaluated.<\/p>\n\n\n\n

Yet the practical management of a patient recovering from COVID is considerably less standardized.<\/p>\n\n\n\n

A patient may leave an emergency department after an episode of dizziness with an instruction to hydrate.<\/p>\n\n\n\n

Another may be referred to cardiology.<\/p>\n\n\n\n

Another may be told that anxiety is responsible.<\/p>\n\n\n\n

Another may never be asked whether the episode occurred while driving.<\/p>\n\n\n\n

What should happen after a blackout?<\/h5>\n\n\n\n

The first principle should be remarkably simple:<\/p>\n\n\n\n

A person who has actually lost consciousness while driving should not simply resume driving because the episode has stopped.<\/strong><\/p>\n\n\n\n

The cause should be established as far as medically possible.<\/p>\n\n\n\n

Depending on the circumstances, evaluation may include an electrocardiogram, ambulatory rhythm monitoring, orthostatic blood-pressure measurements, oxygen saturation, laboratory testing, medication review and neurological assessment.<\/p>\n\n\n\n

If cardiac syncope is suspected, prolonged rhythm monitoring may be essential.<\/p>\n\n\n\n

If orthostatic intolerance is suspected, autonomic testing may be appropriate.<\/p>\n\n\n\n

If seizure is a possibility, neurological evaluation becomes important.<\/p>\n\n\n\n

If COVID is recent, clinicians should ask about the timing of infection, oxygenation, exertional intolerance, palpitations, orthostatic symptoms and previous episodes.<\/p>\n\n\n\n

And perhaps most importantly, the patient should be asked a question that is surprisingly easy to omit:<\/p>\n\n\n\n

\u201cWere you driving when this happened?\u201d<\/strong><\/p>\n\n\n\n

The scientific question that remains<\/h5>\n\n\n\n

The most interesting unanswered question is not whether COVID can cause syncope.<\/p>\n\n\n\n

There is sufficient evidence to say that syncope occurs in some patients with COVID, that COVID can be associated with cardiac arrhythmias and autonomic disturbances, and that severe infection can produce hypoxemia.<\/p>\n\n\n\n

The unresolved question is population-level.<\/p>\n\n\n\n

How many automobile crashes have been caused by COVID-associated loss of consciousness?<\/p>\n\n\n\n

No national surveillance system appears to answer that question.<\/p>\n\n\n\n

The necessary data would require linking COVID infection records, emergency-department records, ambulance records, medical diagnoses, crash reports, toxicology, cardiac monitoring and perhaps insurance claims.<\/p>\n\n\n\n

Without such linkage, individual cases remain scattered across medical journals, court records, police narratives, rehabilitation stories and newspaper archives.<\/p>\n\n\n\n

The fragments are visible.<\/p>\n\n\n\n

The total is not.<\/p>\n\n\n\n

The road ahead<\/h5>\n\n\n\n

The public conversation about COVID has tended to focus on death, hospitalization, vaccination, respiratory disease and Long COVID.<\/p>\n\n\n\n

But a virus does not have to kill a person to create a catastrophic event.<\/p>\n\n\n\n

It may alter the heart.<\/p>\n\n\n\n

It may disturb autonomic regulation.<\/p>\n\n\n\n

It may reduce oxygen delivery.<\/p>\n\n\n\n

It may produce profound fatigue or cognitive dysfunction.<\/p>\n\n\n\n

And, in rare but consequential cases, it may contribute to an episode in which consciousness disappears.<\/p>\n\n\n\n

Behind the wheel, that interval can be enough.<\/p>\n\n\n\n

The danger is not that every person with COVID is an unsafe driver. That would be both medically unjustified and socially destructive.<\/p>\n\n\n\n

The danger is that the driver who has experienced unexplained loss of consciousness may not know why it happened \u2014 and the physician may not ask.<\/strong><\/p>\n\n\n\n

A highway has no margin for diagnostic uncertainty.<\/p>\n\n\n\n

There is no opportunity to conduct an echocardiogram after the patient has blacked out at 65 miles per hour.<\/p>\n\n\n\n

There is no chance to place a cardiac monitor on a driver after the crash.<\/p>\n\n\n\n

The only safe time to investigate the mystery is before the next disappearance of consciousness.<\/p>\n\n\n\n

COVID may prove to be one contributor among many. It may ultimately account for only a small fraction of unexplained crashes. Or future studies may reveal a substantially larger relationship than the current literature suggests.<\/p>\n\n\n\n

We do not yet know.<\/p>\n\n\n\n

But the evidence is now strong enough to justify asking the question.<\/p>\n\n\n\n

Because sometimes the most dangerous symptom of an illness is not pain, fever or shortness of breath.<\/p>\n\n\n\n

Sometimes it is the moment when the road disappears.<\/p>\n","protected":false},"excerpt":{"rendered":"

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