causes of concussion
A concussion is a minor or less severe type of brain injury, which may also be called a traumatic brain injury. A concussion can affect how the brain works for a awhile. It may lead to headaches, changes in alertness, or loss of consciousness. A concussion can result from a fall, sports activities, or car accidents. A big movement of the brain (called jarring) in any direction can cause a person to lose alertness (become unconscious). How long the person stays unconscious may be a sign of how bad the concussion is.
What Is a Concussion? A concussion is a type of traumatic brain injuryâor TBIâcaused by a bump, blow, or jolt to the head or by a hit to the body that causes the head and brain to move rapidly back and forth.