Background & Science

About concussion

  • A concussion is a type of mild head injury. It happens when the head gets bumped, which causes a short-term change in how the brain works.
  • You don’t need to have lost consciousness to experience a concussion.
  • Children typically take longer to recover from a concussion than adults.
  • Concussion symptoms can take up to four weeks to go away, and sometimes even longer. But for most children, symptoms improve within several days.