Concussion is a mild type of brain injury that occurs when the brain gets shaken inside the skull. This can happen from a direct blow, for example , hitting the ground during a fall – or indirectly such as after a strong tackle in sport. 

Unlike severe brain injuries, concussion does not cause structural damage to the brain.bInstead the sudden movement temporarily disrupts how the brain cells (nerves) communicae. While this disruption is short term, the brain needs time to restore normal function, which is why symptoms can persist for several days or weeks. 

Common symptoms include headache, dizziness, blurry vision, brain fog, fatigue, balance problems or “just not feeling right”

There is a common misconception that concussion causes inflammation, bruising or swelling of the brain – those signs indicate a more serious Traumatic Brain Injury (TBI). If someone experiences repeated vomiting, seizures, severe headache or visible deformity of the skull and they should seek emergency medical care immediately.