Long COVID & Post-Acute Sequelae of SARS-CoV-2

Long COVID Treatment That Targets What the Infection Left Behind

We measure and train the neurological systems the virus disrupted — the variables most Long COVID care never looks at.

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Is this you?

If any of these sound familiar, you're in the right place.

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Keiser Clinic patient in waiting room recliner

The infection was the event. What it left behind in your neurological system is what we measure — and what we treat.

Most Long COVID care is centered around symptom management and waiting it out. That's not us. For a significant subset of Long COVID patients, the lasting disruption lives in how the brain regulates blood flow, how the autonomic nervous system recovers from exertion, and how neurovascular coupling responds under load. Those are not mysterious. They are testable. And they are treatable.

Data Callout
Cerebral blood flow abnormalities persist in Long COVID patients even after heart rate and blood pressure on tilt return to normal. The infection may be gone. The neurological disruption it caused doesn't resolve on its own — and it doesn't show up on standard testing.

It starts with a consultation.

Before booking your visit, schedule a free phone consultation with a Keiser Clinic physician. They'll listen to your story, answer your questions, and tell you plainly whether coming in makes sense for your situation.

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What to expect

  • —A physician listens to your full story
  • —No false hopes — if it's not a match, you'll know after this call
  • —Free — no cost to speak with a doctor
What You Can Expect From Diagnostic Testing With Us

A mechanism-focused evaluation built for what standard Long COVID testing misses.

Routine bloodwork, chest X-rays, and EKGs can all be normal in Long COVID. That's not a gap in your symptoms — it's a gap in what those tests were designed to find. Our workup measures neurovascular regulation, autonomic reflex integrity, cerebral perfusion, and exertional thresholds — the functional systems most Long COVID care never evaluates.

Transcranial Doppler TCD

Transcranial Doppler (TCD)

We measure cerebral blood flow in real time during orthostatic challenge. Research in Long COVID cohorts shows cerebral blood flow can remain abnormal even after heart rate and blood pressure normalize — TCD is the only way to see it.

 Capnography EtCO2

Capnography (EtCO₂)

Research shows end-tidal CO₂ can be measurably low in Long COVID patients despite a normal respiratory rate. CO₂ directly governs cerebral blood vessel tone — when it drops, blood flow to the brain constricts. This is one of the most overlooked and most treatable variables in the Long COVID picture.

 Continuous Tilt and Task Stress

Continuous Tilt & Task Stress

We apply cognitive and physical challenges while measuring cerebral blood flow in real time — identifying the precise threshold at which your system begins to fail. This is the objective basis for understanding your crash pattern, and for building a treatment protocol that works within it.

 Visual and Oculomotor Assessment

Visual & Oculomotor Assessment

We assess the visual and vestibular systems using video-oculography (VOG) and pupil response testing. If these systems are misfiring, they can keep your autonomic nervous system stuck in overdrive.

 Autonomic Stress Testing

Autonomic Stress Testing

We use deep breathing, Valsalva, and postural stress to measure how your autonomic system responds and recovers under challenge. Then we layer in cognitive, cervical, and visual demands, because many patients only break down under combined load. What looks manageable at rest often becomes obvious when the system is pushed.

 Bedside Neurological Examination

Bedside Neurological Examination

Some of the most important findings still come from an experienced doctor examining you directly. We assess reflexes, eye tracking, cervical motion, and coordination to catch the neurological patterns that may not show up on a screen.

A Note From Our Team

We know what it feels like to be on the other side of this.

Several of our doctors have been patients or caregivers themselves. They know what it feels like to be dismissed and sent home with no answers. When you become a patient here, you have a care team of doctors who understand where you've been — and what it actually takes to get better.

Targeted Neuroplasticity

Your treatment plan doesn't exist until your data does.

Your rehabilitation is not a program that existed before you walked in the door. Nothing is prescribed before we know exactly where the failure is and what's driving it. Long COVID is not one illness — it's multiple possible physiological failures under one umbrella. We find yours specifically, and build treatment around that.

We are not looking for the virus.

The infection was the event — the same way a car accident is the event. What we treat is the neurological damage the event left behind. Impaired cerebral blood flow regulation, autonomic reflex dysfunction, and disrupted neurovascular coupling don't resolve because the virus is gone. They require targeted rehabilitation — and they're measurable right now.

We take the crash seriously.

Post-exertional malaise is not deconditioning. It is a measurable physiological event with a real threshold. We identify that threshold objectively — then build your entire treatment protocol around it. We do not prescribe exercise that crosses it. We use real-time monitoring to stay below it while building your capacity above it.

We objectively measure progress.

Subjective improvement can be placebo or temporary. We don't just rely on how you feel to measure progress. We retest you objectively throughout your visit, comparing data points to verify real measurable improvement — so you leave with evidence, not just hope.

After you leave.

Virtual follow-up is included in your visit. Your protocols go home with you. We check in, answer questions, and make sure you stay consistent with what's working — until you no longer need us.

Most patients who come to us carry more than one of these diagnoses. These pages exist because that is often how people find us, not because we treat each diagnosis on a separate track. Our testing measures what your brain and nervous system are actually doing. The label you arrive with does not change that.

"The infection is over. The neurological disruption it caused is what we fix."

Some of what you may be prescribed during your visit

Vestibular Rehabilitation

Vestibular Rehabilitation

Retrains the balance system when dizziness, motion sensitivity, visual instability, or autonomic symptoms are being worsened by vestibular dysfunction.
Visual-Spatial and Oculomotor Retraining

Visual-Spatial & Oculomotor Retraining

Targets the visual control systems that stabilize gaze and helps the brain build a more accurate map of the body in space. This can reduce neurostrain, disorientation, overload, and instability under cognitive and sensory load.

Peripheral Nerve Stimulation

Peripheral Nerve Stimulation

Uses targeted stimulation, including tools like the Neuro20 suit, to improve sensory input from the body and give the nervous system better information to regulate from.

 Cervical and Manual Therapy

Cervical & Manual Therapy

Addresses mechanical strain and poor sensory signaling coming from the neck and upper cervical region, where instability can interfere with brainstem function, and autonomic regulation.
Neuromuscular Retraining

Neuromuscular Retraining

Rebuilds cleaner movement patterns so activity becomes more tolerable and less likely to trigger compensation, overload, or crash responses.

Cognitive and Dual-Task Training

Cognitive & Dual-Task Training

Challenges the brain's ability to regulate under mental load, helping improve function when symptoms flare with thinking, multitasking, or divided attention.

Exercise Rehabilitation

Exercise Rehabilitation

Uses carefully dosed activity to improve tolerance and function without relying on generic exercise protocols like CHOP or GET that ignore cerebral blood flow, autonomic limitations, and issues related to fatigue.
Photobiomodulation

Photobiomodulation

Uses red light and laser therapy to support tissue recovery, reduce irritation, and complement neurological rehabilitation in areas that need targeted stimulation.

Magnetic Therapy

Magnetic Therapy

We use the non-invasive Magnetolith in patients with ligament laxity, including hEDS, to treat tendons and joints that may be contributing to instability in joints or the upper cervical spine.

A Different Approach To Long COVID Care

Category Conventional Care The Keiser Clinic
Framing Searching for viral persistence or systemic inflammation as the primary explanation The infection was the event. What it disrupted in your autonomic and neurovascular system is what we measure and treat — right now.
Testing Routine bloodwork, chest X-rays, EKGs — all of which can be normal in Long COVID Real-time cerebral blood flow, CO₂ reactivity, autonomic reflex testing, and exertional threshold assessment — measuring what standard testing was never designed to find.
The Crash "Pace yourself" — with no objective threshold identified and no mechanism explained PEM is a measurable neurovascular event. We identify your threshold objectively and build your entire protocol around it — staying below it while expanding it.
Treatment Breathing exercises, supplements, pacing, and referrals to separate specialists Individualized neurological protocols built from your functional data — targeting the specific autonomic and neurovascular failure driving your symptoms.
Progress Patient self-report. "Give it more time." Objective retesting throughout your stay — if the data doesn't change, the protocol does.
Overlapping Conditions POTS, MCAS, ME/CFS-like symptoms treated separately or not at all Evaluated as part of the same clinical picture — the autonomic nervous system is the common thread, and we look there first.
Doctor Access 15–45 minute visits months apart — if a Long COVID specialist is available at all Multiple hours a day with a full clinical team during your stay, with direct follow-up after you leave.
How It Works

Commit only to the first day. Stay as long as you need.

We intentionally see a small number of patients each week. When you're here, you have a full clinical team — not a rotating roster of one-off appointments.

Most patients stay two to three weeks. Some stay longer. But when you arrive, the only thing you commit to upfront is that first day of diagnostic testing. What comes after is your decision.

We don't run a copy-and-paste Long COVID rehabilitation program. We become your care team and design a protocol specific to you.

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2,000+
patients helped on their recovery journey
4–6 wks
Typical time to be seen. Most Long COVID specialists have waitlists measured in months, not weeks.
No Supplements
We do not build your care around supplement protocols. By the time most patients reach us, they have already tried that.
The First Day
Your only commitment. You will leave with the most comprehensive neurovascular evaluation available for Long COVID — regardless of what you decide next.
Common Questions

Before you reach out, you probably have questions.

Yes. It's 15 minutes with one of our physicians. No cost, no obligation. We use it to determine if our approach matches your situation.
Most Long COVID clinics focus on managing individual symptoms — fatigue protocols, breathing exercises, cardiac monitoring. What they rarely do is measure how the brain and nervous system are actually functioning under stress. Our evaluation looks at cerebral blood flow regulation, autonomic dysfunction, vestibular processing, and neurological function — the systems that Long COVID most commonly disrupts.
Not at the beginning. The first phase of care has to happen in person, because we do not build treatment plans from symptoms, diagnostic labels, or guesswork. We need objective testing and in-person treatment to understand what is driving your symptoms and to see how your system responds in real time. Once that work is done, post-visit virtual follow-up is included in your care.
That is one of the most common concerns we hear, especially from patients who have been mostly housebound or bedridden. Many of our patients were convinced they were too unwell to make the trip — right up until they arrived. Our team can help you think through the logistics, timing, and lodging options that make the visit as manageable as possible.
We're out of network for most insurance. Many patients use HSA/FSA funds, and we provide superbills for potential reimbursement. We've chosen this model because we don't want your care limited by what insurance allows.
The total cost depends on how long you stay and what level of treatment makes sense once your findings are clear. That is exactly why we start with a free consultation. Once we understand your specific situation, we will give you a clear, straightforward breakdown of the costs before you commit to anything.
No. You can book directly.
We will be honest with you. By the time most people find us, they have already been through a lot — physically, emotionally, and financially. The last thing they need is another clinic giving them false hope. If we do not believe our approach is the right fit, we will tell you plainly.

Want to hear directly from patients who've been through this?

Read POTS & dysautonomia recovery stories →
Take the First Step

Start with a free consultation call.

A Keiser Clinic physician will listen to your story, answer your questions, and tell you plainly whether coming in makes sense for your situation. No pressure. No false hopes.

Schedule Your Free Call