01/09/2026
A concussion happens when the brain is rapidly jolted or shaken inside the skull. That can occur from:
A minor-looking hit to the head
A whiplash-type movement (even without direct head contact)
Falls, sports impacts, car accidents, or sudden stops
It’s not about how hard the hit looks, but how the force affects the brain. That’s why people can have concussion symptoms even after what seems like a small impact.