The Functional Neurology Center: Concussion Brain Injury Minnetonka, MN.

03/22/2026

🧠 The Trigeminal System: The Most Overlooked Link Between Head Injury, Headaches, Facial Pain, Autonomics & Brain Recovery

Most people have heard of the trigeminal nerve because of “trigeminal neuralgia” or sinus pain…
…but almost no one understands how MASSIVELY important the trigeminal system is for:
• Headaches & migraines
• Concussion & post-traumatic symptoms
• Facial and jaw pain
• TMJ dysfunction
• Sinus pressure
• Neck pain & cervicogenic headaches
• Autonomic dysregulation (light sensitivity, nausea, dizziness)
• Cerebral blood flow
• Neuroinflammation
• Cognitive fatigue
• Brain recovery

At The Functional Neurology Center, we evaluate the trigeminal system in every complex case — because it is one of the most influential and interconnected systems in the human nervous system.

This system is NOT just a facial nerve.
It is a brainstem, vascular, sensory, autonomic, and pain-modulating superhighway.

Let’s break down why it matters.

⸻

🔍 What Is the Trigeminal System?

The trigeminal nerve (cranial nerve V) is the largest cranial nerve, with three major branches:
• V1 Ophthalmic – forehead, scalp, eye, dura, sinuses
• V2 Maxillary – cheeks, upper teeth, sinuses
• V3 Mandibular – jaw, lower teeth, TMJ, chewing muscles

It carries:

✔ Sensory input

Touch, pressure, pain, temperature, vibration, and proprioception from the head, face, jaw, sinuses, teeth, tongue, meninges, and blood vessels.

✔ Motor control

Muscles of chewing (masseter, temporalis, pterygoids), tensor tympani, and more.

✔ Autonomic & reflex connections

Deep links to parasympathetic nuclei, pupillary responses, salivation, tear production, and brainstem autonomics.

✔ Vascular & meningeal innervation

The trigeminal system innervates the meninges, dura, and cerebral blood vessels — making it a direct controller of brain vascular tone and blood flow dynamics.

The trigeminal ganglion and brainstem nuclei then relay information to:
• Thalamus
• Hypothalamus
• Insular cortex
• Somatosensory cortex
• Limbic/emotional centers
• Cerebellum
• Vestibular nuclei
• Autonomic brainstem nuclei
• Pain modulation systems (like PAG – periaqueductal gray)

This is why trigeminal input affects head pain, emotion, dizziness, visual comfort, sensory tolerance, and autonomic stability.

⸻

🔥 The Trigeminovascular System: The Source of Most Headaches

One of the most important sub-systems is the Trigeminovascular System (TVS) — the network connecting trigeminal nerve endings to the dura + cranial blood vessels.

When activated by:
• Trauma
• Whiplash
• Concussion
• Stress
• TMJ strain
• Sinus inflammation
• Neck dysfunction
• Vascular irritation

…the TVS releases inflammatory neuropeptides like:
• CGRP
• Substance P
• Neurokinin A

This causes:

✔ Blood vessel dilation

✔ Neurogenic inflammation

✔ Increased pain sensitivity

✔ Facial & head pain

✔ Migraine-like symptoms

✔ Autonomic symptoms (nausea, light sensitivity)

This is the core mechanism behind:
• Migraines
• Tension headaches
• Sinus headaches
• Post-traumatic headaches
• Occipital headaches that radiate behind the eye
• TMJ-driven head pain
• Concussion headaches

If you irritate the trigeminal system, you can trigger headache physiology — even without a direct head injury.

⸻

🧠 Concussion & the Trigeminal System: The Missing Link

Here’s the part most providers miss:

The trigeminal system is DIRECTLY affected after concussion.

Concussion creates:
• Shearing forces on the brainstem
• Irritation of the meninges (innervated by V1)
• Neuroinflammation → activates trigeminovascular endings
• Altered cerebral blood flow → sensed by trigeminal fibers
• TMJ/mandible compression from impact
• Whiplash → cervical inflammation → trigeminal-cervical convergence

All of these increase firing of trigeminal pathways.

This is why post-concussion patients develop:

✔ Head pressure

✔ Pain behind the eyes

✔ Facial pain or tingling

✔ Migraines

✔ Light & sound sensitivity

✔ TMJ pain

✔ Ear fullness or pressure

✔ Dizziness

✔ Nausea

✔ Cognitive fatigue

And even more importantly…

The trigeminal system helps regulate cerebral blood flow.

If this pathway is disrupted, the brain may struggle with:
• Autoregulation
• Neurovascular coupling
• Metabolic clearance
• Cognitive endurance

This explains WHY concussion symptoms get worse with:
• Bright lights
• Visual motion
• Thinking too hard
• Screen use
• Busy environments
• Neck movement
• Jaw clenching
• Increased stress

All of these stimulate trigeminal input.

⸻

🔄 Cervical Spine → Trigeminal System → Pain & Dizziness

The upper cervical spine shares convergence pathways with the trigeminal system in the brainstem (trigeminal-cervical complex).

Inflammation or dysfunction in:
• C0–C1 joints
• C1–C2 joints
• Suboccipitals
• SCM
• Deep neck flexors
• Cervical proprioception

…can activate the same brainstem nuclei that process trigeminal pain.

This is why neck injuries cause:
• Headaches
• Facial pain
• Eye strain
• Nausea
• Dizziness
• Trigeminal neuralgia-like symptoms

And why treating the cervical spine often reduces “facial pain” or “head pressure.”

⸻

💥 The Trigeminal System & the Vestibular System

The trigeminal system links deeply with the vestibular nuclei, influencing:
• Balance perception
• Visual stability
• Head motion tolerance
• Cervico-ocular reflexes
• Spatial awareness

When trigeminal input becomes abnormal, patients experience:
• Dizziness
• Rocking or swaying
• Motion sensitivity
• “On a boat” sensation
• Feeling off-center
• Difficulty with head turns

This is why trigeminal modulation can help stabilize dizziness after concussion.

⸻

🌡 Trigeminal System, Autonomics & Inflammation

The trigeminal system interfaces with:
• The vagus nerve
• Parasympathetic nuclei
• Sympathetic brainstem regions
• Hypothalamic stress circuits
• Pain modulation centers

Activation can produce:
• Nausea
• Temperature dysregulation
• Heart rate instability
• Anxiety or irritability
• Fatigue
• Sleep disturbance
• Digestive changes

And conversely — calming trigeminal input calms the autonomic system.

⸻

⚡ Trigeminal Nerve Stimulation (TNS): A Breakthrough for Brain Recovery

Research shows that stimulating trigeminal pathways can:
• Boost cerebral blood flow
• Reduce neuroinflammation
• Improve autonomic regulation
• Support consciousness in severe brain injury
• Reduce migraine frequency
• Improve mood & cognition
• Help post-concussion symptoms
• Improve sleep and sensory tolerance

This is why trigeminal-focused neuromodulation is becoming a major tool in functional neurology.

At The FNC, we integrate:
• ARPwave trigeminal/vagal stimulation
• TMJ and cranio-cervical work
• Facial proprioceptive rehab
• Neuromuscular retraining
• Sensory desensitization
• Autonomic stabilization
• Pterygoid, masseter, temporalis functional work
• Cranial/dural release
• Vestibular + trigeminal integration
• Visual + trigeminal reflex retraining

When you rehab this system properly, symptoms begin to unwind fast.

⸻

🌟 The Takeaway

The trigeminal system is:

✔ A brainstem regulator
✔ A vascular controller
✔ A pain amplifier — or pain reliever
✔ A balance + eye movement collaborator
✔ A major player in headaches, concussion, and TMJ
✔ A target for neuromodulation and rehabilitation

Most patients with:
• Post-concussion symptoms
• Chronic headaches
• TMJ pain
• Facial pain
• Light sensitivity
• Dizziness
• Neck pain
• Cognitive fatigue

…have trigeminal dysregulation at the root.

The good news:
This system is incredibly trainable.
With the right functional neurology approach, you can calm it, retrain it, and rebuild healthy sensory processing.

This often leads to some of the fastest and most dramatic breakthroughs we see in clinic.

⸻

There is HOPE.

And the trigeminal system is one of the most powerful pathways we use to help patients get it back.

TheFNC.com
612 223 8590

⸻



Image: https://biorender.com/

https://www.mdpi.com/2227-9059/11/9/2392 #

03/22/2026

🧠 The Trigeminal System: The Most Overlooked Link Between Head Injury, Headaches, Facial Pain, Autonomics & Brain Recovery

Most people have heard of the trigeminal nerve because of “trigeminal neuralgia” or sinus pain…
…but almost no one understands how MASSIVELY important the trigeminal system is for:
• Headaches & migraines
• Concussion & post-traumatic symptoms
• Facial and jaw pain
• TMJ dysfunction
• Sinus pressure
• Neck pain & cervicogenic headaches
• Autonomic dysregulation (light sensitivity, nausea, dizziness)
• Cerebral blood flow
• Neuroinflammation
• Cognitive fatigue
• Brain recovery

At The Functional Neurology Center, we evaluate the trigeminal system in every complex case — because it is one of the most influential and interconnected systems in the human nervous system.

This system is NOT just a facial nerve.
It is a brainstem, vascular, sensory, autonomic, and pain-modulating superhighway.

Let’s break down why it matters.

⸻

🔍 What Is the Trigeminal System?

The trigeminal nerve (cranial nerve V) is the largest cranial nerve, with three major branches:
• V1 Ophthalmic – forehead, scalp, eye, dura, sinuses
• V2 Maxillary – cheeks, upper teeth, sinuses
• V3 Mandibular – jaw, lower teeth, TMJ, chewing muscles

It carries:

✔ Sensory input

Touch, pressure, pain, temperature, vibration, and proprioception from the head, face, jaw, sinuses, teeth, tongue, meninges, and blood vessels.

✔ Motor control

Muscles of chewing (masseter, temporalis, pterygoids), tensor tympani, and more.

✔ Autonomic & reflex connections

Deep links to parasympathetic nuclei, pupillary responses, salivation, tear production, and brainstem autonomics.

✔ Vascular & meningeal innervation

The trigeminal system innervates the meninges, dura, and cerebral blood vessels — making it a direct controller of brain vascular tone and blood flow dynamics.

The trigeminal ganglion and brainstem nuclei then relay information to:
• Thalamus
• Hypothalamus
• Insular cortex
• Somatosensory cortex
• Limbic/emotional centers
• Cerebellum
• Vestibular nuclei
• Autonomic brainstem nuclei
• Pain modulation systems (like PAG – periaqueductal gray)

This is why trigeminal input affects head pain, emotion, dizziness, visual comfort, sensory tolerance, and autonomic stability.

⸻

🔥 The Trigeminovascular System: The Source of Most Headaches

One of the most important sub-systems is the Trigeminovascular System (TVS) — the network connecting trigeminal nerve endings to the dura + cranial blood vessels.

When activated by:
• Trauma
• Whiplash
• Concussion
• Stress
• TMJ strain
• Sinus inflammation
• Neck dysfunction
• Vascular irritation

…the TVS releases inflammatory neuropeptides like:
• CGRP
• Substance P
• Neurokinin A

This causes:

✔ Blood vessel dilation

✔ Neurogenic inflammation

✔ Increased pain sensitivity

✔ Facial & head pain

✔ Migraine-like symptoms

✔ Autonomic symptoms (nausea, light sensitivity)

This is the core mechanism behind:
• Migraines
• Tension headaches
• Sinus headaches
• Post-traumatic headaches
• Occipital headaches that radiate behind the eye
• TMJ-driven head pain
• Concussion headaches

If you irritate the trigeminal system, you can trigger headache physiology — even without a direct head injury.

⸻

🧠 Concussion & the Trigeminal System: The Missing Link

Here’s the part most providers miss:

The trigeminal system is DIRECTLY affected after concussion.

Concussion creates:
• Shearing forces on the brainstem
• Irritation of the meninges (innervated by V1)
• Neuroinflammation → activates trigeminovascular endings
• Altered cerebral blood flow → sensed by trigeminal fibers
• TMJ/mandible compression from impact
• Whiplash → cervical inflammation → trigeminal-cervical convergence

All of these increase firing of trigeminal pathways.

This is why post-concussion patients develop:

✔ Head pressure

✔ Pain behind the eyes

✔ Facial pain or tingling

✔ Migraines

✔ Light & sound sensitivity

✔ TMJ pain

✔ Ear fullness or pressure

✔ Dizziness

✔ Nausea

✔ Cognitive fatigue

And even more importantly…

The trigeminal system helps regulate cerebral blood flow.

If this pathway is disrupted, the brain may struggle with:
• Autoregulation
• Neurovascular coupling
• Metabolic clearance
• Cognitive endurance

This explains WHY concussion symptoms get worse with:
• Bright lights
• Visual motion
• Thinking too hard
• Screen use
• Busy environments
• Neck movement
• Jaw clenching
• Increased stress

All of these stimulate trigeminal input.

⸻

🔄 Cervical Spine → Trigeminal System → Pain & Dizziness

The upper cervical spine shares convergence pathways with the trigeminal system in the brainstem (trigeminal-cervical complex).

Inflammation or dysfunction in:
• C0–C1 joints
• C1–C2 joints
• Suboccipitals
• SCM
• Deep neck flexors
• Cervical proprioception

…can activate the same brainstem nuclei that process trigeminal pain.

This is why neck injuries cause:
• Headaches
• Facial pain
• Eye strain
• Nausea
• Dizziness
• Trigeminal neuralgia-like symptoms

And why treating the cervical spine often reduces “facial pain” or “head pressure.”

⸻

💥 The Trigeminal System & the Vestibular System

The trigeminal system links deeply with the vestibular nuclei, influencing:
• Balance perception
• Visual stability
• Head motion tolerance
• Cervico-ocular reflexes
• Spatial awareness

When trigeminal input becomes abnormal, patients experience:
• Dizziness
• Rocking or swaying
• Motion sensitivity
• “On a boat” sensation
• Feeling off-center
• Difficulty with head turns

This is why trigeminal modulation can help stabilize dizziness after concussion.

⸻

🌡 Trigeminal System, Autonomics & Inflammation

The trigeminal system interfaces with:
• The vagus nerve
• Parasympathetic nuclei
• Sympathetic brainstem regions
• Hypothalamic stress circuits
• Pain modulation centers

Activation can produce:
• Nausea
• Temperature dysregulation
• Heart rate instability
• Anxiety or irritability
• Fatigue
• Sleep disturbance
• Digestive changes

And conversely — calming trigeminal input calms the autonomic system.

⸻

⚡ Trigeminal Nerve Stimulation (TNS): A Breakthrough for Brain Recovery

Research shows that stimulating trigeminal pathways can:
• Boost cerebral blood flow
• Reduce neuroinflammation
• Improve autonomic regulation
• Support consciousness in severe brain injury
• Reduce migraine frequency
• Improve mood & cognition
• Help post-concussion symptoms
• Improve sleep and sensory tolerance

This is why trigeminal-focused neuromodulation is becoming a major tool in functional neurology.

At The FNC, we integrate:
• ARPwave trigeminal/vagal stimulation
• TMJ and cranio-cervical work
• Facial proprioceptive rehab
• Neuromuscular retraining
• Sensory desensitization
• Autonomic stabilization
• Pterygoid, masseter, temporalis functional work
• Cranial/dural release
• Vestibular + trigeminal integration
• Visual + trigeminal reflex retraining

When you rehab this system properly, symptoms begin to unwind fast.

⸻

🌟 The Takeaway

The trigeminal system is:

✔ A brainstem regulator
✔ A vascular controller
✔ A pain amplifier — or pain reliever
✔ A balance + eye movement collaborator
✔ A major player in headaches, concussion, and TMJ
✔ A target for neuromodulation and rehabilitation

Most patients with:
• Post-concussion symptoms
• Chronic headaches
• TMJ pain
• Facial pain
• Light sensitivity
• Dizziness
• Neck pain
• Cognitive fatigue

…have trigeminal dysregulation at the root.

The good news:
This system is incredibly trainable.
With the right functional neurology approach, you can calm it, retrain it, and rebuild healthy sensory processing.

This often leads to some of the fastest and most dramatic breakthroughs we see in clinic.

⸻

There is HOPE.

And the trigeminal system is one of the most powerful pathways we use to help patients get it back.

TheFNC.com
612 223 8590

DC DACNB

⸻



Image: https://biorender.com/

https://www.mdpi.com/2227-9059/11/9/2392 #

The Functional Neurology Center is on the cutting edge of healthcare—specializing in helping people of all ages with a variety of neurological disorders or traumas that have affected their overall brain health.

03/21/2026

⭐️ CONCUSSION, THE NECK & DIZZINESS — THE CRITICAL LINK TOO OFTEN MISSED ⭐️

Why persistent concussion symptoms are NOT just “in the brain”… and why the neck may be the missing piece of your recovery.

Every week at The Functional Neurology Center, we meet patients who have been told to “just rest” after concussion — only to find themselves months or even years later still struggling with dizziness, light sensitivity, visual strain, imbalance, head pressure, jaw pain, or motion intolerance.

Many are told their scans are normal.
Many are told it’s anxiety.
Many are told their symptoms “don’t make sense.”

But emerging research — including a 2025 Frontiers in Neurology article on cervicogenic dizziness — is finally explaining what we see in clinic every day:

👉 Persistent post-concussion symptoms are often driven by a sensory mismatch between the neck, the vestibular system, and the visual system.
👉 And until the neck is addressed, symptoms can persist — no matter how much you rest.

⸻

🧠 The Science: Why the Neck Matters in Concussion

The upper cervical spine (C0–C3) is packed with proprioceptors — sensors that tell the brain:

• where your head is in space
• how fast it’s moving
• how your eyes should stabilize
• how your balance system should respond
• and how to coordinate posture

After concussion or whiplash, this information can become distorted.

The 2025 Frontiers in Neurology article outlines exactly what happens next:

🔹 1️⃣ The neck sends altered proprioceptive signals

🔹 2️⃣ The brainstem and vestibular nuclei receive conflicting information

🔹 3️⃣ The visual system tries to compensate

🔹 4️⃣ The cerebellum attempts to reweight sensory input

🔹 5️⃣ A sensory mismatch develops

This mismatch is what drives:

✔ dizziness
✔ motion intolerance
✔ unsteadiness
✔ “floating” or “rocking” sensations
✔ eye strain
✔ head pressure
✔ jaw or facial pain
✔ anxiety in busy environments

The article emphasizes that this mismatch can persist — even after the brain has “healed” — unless the cervical system is rehabilitated.

(Source: Frontiers in Neurology, 2025 — Cervicogenic Dizziness Perspective)

⸻

🌀 Why Imaging & Rest Often Fail

Standard MRIs and CT scans look at structure — not function.

They cannot detect:

• proprioceptive errors
• vestibular integration issues
• cervical mechanoreceptor dysfunction
• sensory mismatch
• autonomic dysregulation

So patients are told everything is “normal,” while their functional systems are deeply dysregulated.

Rest alone cannot recalibrate these systems.

They need targeted, active retraining.

⸻

🎯 The FNC Approach — Grounded in Research & Clinical Results

We specialize in evaluating and rehabilitating the exact systems involved in post-concussion dizziness:

✔ Cervical Proprioceptive Training

• joint position error
• deep neck flexor sequencing
• suboccipital function
• C0–C3 sensorimotor control

✔ Vestibular Rehabilitation

• VOR gain
• head-eye reflex training
• habituation
• motion sensitivity reduction

✔ Ocular Motor & Visual Processing

• saccades
• pursuits
• convergence
• optokinetic response

✔ Trigeminal & TMJ Pathways

• dural tension
• jaw mechanics
• facial pain modulation

✔ Cerebellar / Nodulus Integration

• gravity & velocity storage
• otolith processing
• postural control

✔ Autonomic Regulation

• HRV
• breath-driven vagal modulation
• limbic calming

✔ Sensory Re-weighting & Integration

where the REAL healing occurs.

We do not guess.
We measure.
We map systems.
We treat the whole network — not just the symptom.

This is why patients who have tried everything else often improve when these systems are finally treated together.

⸻

🙌 Why This Matters for YOU

If you still have:

• dizziness
• foggy vision
• motion intolerance
• neck pain
• head pressure
• jaw tension
• imbalance
• fatigue
• anxiety in busy environments

months or years after a concussion…

There is a physiological reason.
It is NOT “in your head.”
It is not “just anxiety.”

It is a treatable mismatch between the neck, vestibular, and visual systems.

And when treated holistically — recovery often accelerates.

⸻

💬 If You’re Still Struggling, You Have Options

At The Functional Neurology Center, we offer:

• comprehensive evaluations
• intensive programs
• multidisciplinary rehab

We serve patients locally & from across the U.S. and internationally.

If you want to learn whether you’re a candidate:

📩 Send us a message
TheFNC.com
💬 Comment “HOPE” below
📞 Request a complimentary consult 612 223 8590
📍 Minnetonka, MN

You deserve answers.

There IS hope — and there is a pathway to recovery.
— The Functional Neurology Center

https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2025.1545241/full

03/21/2026

03/21/2026

03/18/2026

🧠🏒 Only at The Functional Neurology Center…

Today was one of those moments that reminds us why we do what we do.

A young athlete came in for concussion care — working through symptoms, pushing to get back to feeling like himself again.

And by pure coincidence…

His appointment lined up with two of the best in the game —
🏒 Mats Zuccarello and Marcus Johansson of the Minnesota Wild.

Same clinic. Same time. Same mission:

Take care of the brain. Optimize performance. Get back in the game.

After his session, he got the chance to meet them and snap a photo — a moment he’ll never forget.

But here’s what matters most 👇

Whether you’re:
• A pro athlete
• A youth hockey player
• Or someone just trying to feel normal again

Your brain matters. Your recovery matters.

At FNC, we treat every patient with the same level of precision, care, and attention — because healing the brain isn’t one-size-fits-all.

And sometimes…

You get a little extra inspiration along the way. 💙💛

There Is Hope.

03/18/2026

https://experiencelife.lifetime.life/podcast/how-functional-neurology-can-improve-fitness-performance-for-everyday-athletes-and-professionals-alike/

Performing well in fitness endeavors takes consistent effort — yet even with persistent dedication, there may be underlying causes preventing you from performing at your best.

03/18/2026

https://experiencelife.lifetime.life/article/treating-dizziness-and-vertigo/

A functional neurologist offers tips on diagnosing — and treating — dizziness and vertigo.

03/18/2026

https://experiencelife.lifetime.life/podcast/jeremy-schmoe/

Traumatic brain injuries (TBIs) are most often connected to sports-related trauma, yet nearly half occur in everyday life from incidents such as slips, falls, and even infections. The good news: There’s hope for healing. Jeremy Schmoe, DC, joins us to talk about how to identify abnormalities and t...

03/18/2026

https://podcasts.apple.com/us/podcast/hope-survives-brain-injury-podcast/id1538810003?i=1000649343491

Podcast Episode · Hope Survives | Brain Injury Podcast · March 15, 2024 · 54m

03/18/2026

Source: YouTube

Have you ever wondered why the healing brain’s battery seems to drain so quickly, even after simple tasks? Today, we’re diving into the complex and often mis...

03/18/2026

If you're dealing with dizziness brain fog delayed reactions or visual strain this is a valid question.

Driving requires complex brain functions working together in real time.

At The FNC we evaluate visual tracking balance cognitive processing and reflexes to determine if you are ready to get back behind the wheel 🚗 🧠 👀

Call our office at 612-223-8590 to see how we can help.