What Actually Happens in a Concussion? A Simple Breakdown
- Jacob Schmitz
- Nov 21, 2025
- 3 min read
What a Concussion Really Is (In Plain English)
A concussion isn’t just “a hit to the head.” It’s what happens when the brain gets shaken up and overwhelmed for a short period of time.
Most people are told to rest and wait, but symptoms can hang around because the brain and body fall out of sync, not because the brain is still injured.
This article breaks down what’s really going on in a way that actually makes sense.
It’s Not a Bruise: It’s a Temporary Brain Disruption
When you experience a quick, sudden force — like a fall, hit, or whiplash — the brain moves inside the skull. This stretches tiny nerve fibers and temporarily changes how the brain sends and receives signals.
A few things to know:
You don’t have to black out.
You don’t even have to get hit directly in the head.
Whiplash forces alone can create the same effect.
A concussion is more like a system reboot, not a bruise.
The Brain’s “Energy Crash” After A Concussion
Right after the injury, the brain goes through an energy crisis.
Here’s the simple version:
The brain uses a ton of energy all at once.
Blood flow drops right afterward.
The brain doesn’t get the fuel it needs.
This is why people feel:
Foggy
Slowed down
Overstimulated
Sensitive to lights or screens
Easily overwhelmed
It’s not damage — it’s the brain running low on power.
Why the Neck Matters More Than Most People Realize
A big piece of concussion symptoms actually comes from the neck.
Whiplash can irritate:
The upper neck joints
Stabilizing muscles
Nerves that help control balance
Blood flow around the base of the skull
Neck issues can cause:
Headaches
Dizziness
Nausea
Blurry vision
Brain fog
Light sensitivity
This is why treating the brain and the neck often leads to faster, more complete recovery.
The Real Reason Symptoms Linger: Three Systems Out of Sync
A concussion often affects the way three major systems work together:
1. Balance system (vestibular)
Helps you stay steady and not feel dizzy.
2. Eye movement system (oculomotor)
Helps your eyes track, focus, and work together.
3. Body awareness system (proprioception)
Helps your body know where it is in space.
If these systems stop communicating smoothly, everyday things can suddenly feel hard:
Reading
Looking back and forth between screens
Grocery stores
Driving in traffic
Walking in busy places
Symptoms aren’t random — they’re connected to which system is struggling.
Why “Just Rest” Doesn’t Work Long-Term
Rest is helpful for the first 24–48 hours, but after that, too much rest can slow recovery.
If symptoms don’t go away, it’s usually because:
The neck hasn’t recovered fully
Eye movements are still off
Balance pathways aren’t back online
The brain and body aren’t coordinating well
People often struggle for weeks simply because no one checked these systems.
How Modern Concussion Rehab Helps You Recover
Concussion rehab is active, gentle, and tailored to what your systems need. It may include:
Light neck treatment
Eye movement exercises
Balance and coordination work
Breathing and rib mechanics
DNS-inspired movement retraining
Graded exercise
Tools to calm the nervous system
The goal isn’t just to reduce symptoms — it’s to help the brain and body work together again.
When to Get Checked
You should get evaluated if:
Symptoms last more than a few days
Screens or reading make things worse
You have lingering dizziness or headaches
Your neck feels stiff or locked
You feel “off,” foggy, or more tired than usual
You play sports and need guidance returning safely
Getting the right assessment early makes recovery much smoother.
Ready to Start Feeling Better?
If you’re experiencing concussion symptoms in O’Fallon or the surrounding St. Charles County area, I help patients restore the brain-body connection with modern, movement-based concussion care.
You don’t have to wait it out. You can start recovering now.
