You wake up exhausted. Your heart races the moment you stand up. The room tilts, your brain feels wrapped in fog, and every specialist you’ve seen has told you your bloodwork looks fine, your heart looks fine, everything looks fine.

But you are not fine. And you’re not imagining it.

For millions of people, this is the reality of living with POTS (Postural Orthostatic Tachycardia Syndrome) or dysautonomia, conditions that affect the autonomic nervous system (ANS). The ANS is the part of your brain and body responsible for all the things that happen automatically: your heartbeat, blood pressure, digestion, temperature regulation, and more. When this system breaks down, everything can feel broken, even when conventional tests say otherwise.

At Nexus Neuro in Carmel, Indiana, we specialize in diagnosing and treating exactly these kinds of conditions, using advanced autonomic testing and personalized neurological rehabilitation that most clinics simply don’t offer.

What Is Dysautonomia and What Is POTS?

Dysautonomia is an umbrella term for any dysfunction of the autonomic nervous system (ANS). The ANS has two main branches:

• Sympathetic nervous system: the “fight-or-flight” branch, responsible for increasing heart rate and blood pressure under stress.
• Parasympathetic nervous system: the “rest-and-digest” branch, which slows the heart rate, promotes digestion, and supports recovery.

When these two systems fall out of balance, or when the signals between the brain and the body get disrupted, you end up with dysautonomia.

POTS is one of the most common and most misunderstood forms of dysautonomia. Defined by an abnormal increase in heart rate (typically 30+ beats per minute) upon standing, POTS can leave sufferers feeling dizzy, faint, exhausted, and mentally foggy, especially when upright. But POTS isn’t just about heart rate. It’s a complex neurological and circulatory disorder that touches nearly every system in the body.

Common Symptoms (That Standard Tests Often Miss)

POTS and dysautonomia can look like dozens of other conditions, which is why patients often spend years bouncing between doctors before receiving an accurate diagnosis. Symptoms commonly include:

• Heart palpitations or racing heart when standing
• Lightheadedness, dizziness, or near-fainting episodes
• Persistent brain fog and difficulty concentrating
• Extreme fatigue, even after rest
• Headaches or migraines
• Nausea and digestive problems
• Exercise intolerance
• Temperature dysregulation (feeling too hot or too cold)
• Anxiety and mood disturbances
• Chest pain or shortness of breath

Because many of these symptoms overlap with anxiety, chronic fatigue syndrome, autoimmune conditions, and other disorders, POTS is frequently dismissed or misdiagnosed, sometimes for years.

Why One-Size-Fits-All Treatment Fails POTS Patients

Here’s something critical that most providers don’t tell you: not all POTS and dysautonomia patients are the same.

You’ve probably seen the advice everywhere: “try vagus nerve stimulation,” “do deep breathing exercises,” “activate your parasympathetic system.” And while those strategies help some people, for others, they can actually make things worse.

Why? Because dysautonomia isn’t always about an overactive sympathetic system paired with an underactive parasympathetic system. Some patients have the opposite pattern. Others have mixed presentations. Applying the wrong intervention can destabilize the very system you’re trying to correct.

This is exactly why data-driven, individualized care isn’t just a nice-to-have. It is essential.

How We Approach POTS & Dysautonomia at Nexus Neuro

At Nexus Neuro, we don’t guess. We test.

Our comprehensive autonomic and neurological evaluation includes:

1. Autonomic Nervous System (ANS) Testing

We use advanced testing to measure both branches of your ANS, sympathetic and parasympathetic, to understand exactly where the imbalance is. This tells us what’s actually happening in your nervous system so we can build a treatment plan that matches your specific physiology, not a generic protocol.

2. AI-Powered NeuroAI Brain-Body Mapping

We are one of only approximately 15 clinics worldwide using NeuroAI, an AI-driven platform that analyzes your oculomotor and vestibular networks to detect neurological dysfunction that standard imaging and exams simply cannot see. For POTS patients experiencing brain fog, balance issues, or visual disturbances, this level of precision is transformative.

3. DX200 VOG/VNG Eye-Tracking Diagnostics

Our DX200 video oculography and vestibular nystagmography testing tracks eye movements with millisecond precision, revealing neurological dysfunction in the vestibular pathways, a common but often overlooked contributor to POTS symptoms like dizziness and spatial disorientation.

4. Neuro-Metabolic & Immune Panel

Many POTS patients have underlying immune, inflammatory, or metabolic contributors, including gut-brain axis dysfunction, mitochondrial impairment, vascular irregularities, and autoimmune triggers. We assess all of these, because treating only the neurological piece while ignoring the metabolic picture rarely leads to lasting results.

5. Targeted Rehabilitation & Restorative Therapies

Once we know exactly what’s driving your symptoms, we build a personalized rehabilitation plan that may include:

• Vestibular and autonomic rehabilitation exercises
• Nerve stimulation therapies to recalibrate neural signaling
• SoftWave TRT to support tissue repair and reduce inflammation
• Class IV laser therapy (photobiomodulation) for mitochondrial support
• Gut health protocols addressing the gut-brain axis
• Neuro-spinal decompression when structural factors are involved

Who We Help

Our POTS and dysautonomia patients often come to us after years of unanswered questions. They’ve been told their labs are normal. They’ve been dismissed. They’ve tried medications that helped briefly, or not at all. If any of the following sound familiar, we may be able to help:

• You’ve been diagnosed with POTS, dysautonomia, or suspected autonomic dysfunction
• You have chronic dizziness, brain fog, or fatigue that no one has been able to explain
• You feel worse when you stand up or after exercise
• You’ve recently had COVID-19 and your health hasn’t been the same since (Long COVID autonomic dysfunction is increasingly recognized)
• You have a history of concussion or mTBI, which can trigger autonomic dysregulation
• You’ve been told everything is “normal” but you know something is wrong

You Deserve Answers. We Can Find Them.

At Nexus Neuro, we believe that precision diagnostics and personalized care have the power to change lives. If you or someone you love is struggling with POTS, dysautonomia, or unexplained autonomic symptoms, don’t wait another year for answers.

Call us at 317-884-8824 or visit here to book your diagnostic consultation today.