A concussion is a type of traumatic brain injury that occurs when the head experiences a sudden impact or jolt. This can happen during sports, falls, or accidents. Symptoms may include headaches, confusion, dizziness, and difficulty concentrating. While most people recover fully, some may experience long-term effects. Diagnosis typically involves a medical evaluation, including a neurological exam. Treatment usually focuses on rest and gradually returning to normal activities. It's important to monitor symptoms, as repeated concussions can lead to more serious health issues, such as Chronic Traumatic Encephalopathy (CTE), a degenerative brain condition often associated with contact sports.