A concussion is a head injury that happens when your brain moves or twists inside your skull. Concussions are a type of traumatic brain injury. They’re some of the most common (and most commonly misunderstood) injuries that people experience. One concussion usually doesn’t cause permanent brain damage. But experiencing multiple concussions over a lifetime can change your brain’s structure or how it works, which can lead to severe complications and increase your risk of developing serious health conditions. Most people recover without long-term effects, but it’s important not to rush your recovery. Don’t resume physical or other activities before your healthcare provider says it’s safe. cle.clinic/3VI1hBt