A traumatic brain injury (TBI) occurs when an external force causes damage to the brain. This can happen due to events like falls, car accidents, or sports injuries. Symptoms may include confusion, headaches, dizziness, and difficulty concentrating. TBIs can range from mild concussions to severe brain damage. Treatment for TBIs often involves rest and monitoring, but more serious cases may require surgery or rehabilitation. Early diagnosis and intervention are crucial for recovery. Understanding the risks associated with activities like football or biking can help prevent TBIs and promote safety.