Dysautonomia/POTS
Lightheadedness, rapid heartbeat, fatigue, dizziness, or feeling “off”?
It may be your autonomic nervous system — and the right testing can finally show why.Dysautonomia occurs when the autonomic nervous system (ANS) — the system that controls heart rate, blood pressure, breathing, temperature, digestion, and blood flow — stops regulating properly.
This leads to unpredictable, frightening symptoms that can affect your entire life.
Many patients are told:
"It's anxiety."
"Your tests are normal."
"You're just dehydrated."
"You need more salt."
"It's your hormones."
But none of that explains why the symptoms continue… or why they began in the first place.
At Nexus Neuro, we specialize in identifying the root neurological + physiological drivers of dysautonomia and POTS-like symptoms — and developing targeted, functional rehabilitation strategies to restore stability.
Common Dysautonomia & POTS Symptoms
Symptoms often fluctuate day-to-day, making patients feel misunderstood or dismissed.
Common signs include:
- Anxiety-like symptoms without anxiety
- Poor exercise tolerance
- Blood pressure swings
- Feeling “wired and tired”
- Poor temperature regulation
- Shakiness or tremors
- Vision changes when standing or moving
- Chest tightness
- Difficulty concentrating
- “I feel like I’m floating or out of my body”
- Lightheadedness when standing
- Rapid heartbeat (tachycardia)
- Fatigue or energy crashes
- Dizziness or feeling faint
- Brain-fog
- Heat intolerance
- Shortness of breath
- Nausea or GI discomfort
- Palpitations
These symptoms are real, and they are almost always linked to autonomic imbalance — not psychological causes.
The Autonomic Nervous System (ANS) — Explained Simply
Your ANS has two main branches:
Sympathetic (“fight or flight”)
Controls stress response, heart rate, blood flow and mobilizing energy.
Parasympathetic (“rest and digest”)
Controls recovery, digestion, calm states and immune system.
In dysautonomia:
- The sympathetic system may be overactive
- The parasympathetic system may be under-active
Why Dysautonomia Is Often Missed in Traditional Care
Most testing looks at:
- Blood tests
- EKG
- Basic vital signs
- Stress levels
- Hydration
- Routine neurological exams
But dysautonomia comes from functional miscommunication, not structural damage.
You need deeper evaluation of:
- Vestibular system
- Eye movements
- Autonomic reflexes
- Blood pressure responses
- Sensory integration
- Cervical (neck) proprioception
- Brainstem and cerebellar timing
- Neuro-metabolic contributors
This is exactly what we do.
How Nexus Neuro Diagnoses Dysautonomia & POTS
- NeuroAI Video Oculography & Brain Testing
- The eyes reveal autonomic and brainstem dysfunction with incredible precision.
- Diagnostic mapping session
- Autonomic Function Testing
- Sympathetic/parasympathetic balance
- Vagal Tone
- Orthostatic shifts
- Dysautonomia Phenotype ID
- Cervical & Proprioceptive Evaluation
- Neck receptors play a major role in autonomic stability
- Autonomic symptoms often worsen during sensory mismatch (lights, motion, stores, crowds, scrolling).
5. Neuro-Metabolic Evaluation
- Inflammation, oxidative stress, glucose regulation, and immune activity play a huge role in autonomic function.
- Video Oculography / Video Nystagmography
- Eye movements are a non-invasive way to measure brain function and dysfunction
