Potential complications of concussion include:

  • Epilepsy. People who have had a concussion double their risk of developing epilepsy within the first five years after the injury.
  • Cumulative effects of multiple brain injuries. Evidence exists indicating that people who have had multiple concussive brain injuries over the course of their lives may acquire lasting, and even progressive, impairment that limits their ability to function.
  • Postconcussion syndrome. Some people begin having postconcussion symptoms — such as headaches, dizziness and thinking difficulties — a few days after a concussion. Symptoms may continue for weeks to a few months after a concussion.
  • Post-traumatic headaches. Some people experience headaches within a week to a few months after a brain injury.
  • Post-traumatic vertigo. Some people experience a sense of spinning or dizziness for days, week or months after a brain injury.
  • Second impact syndrome. Experiencing a second concussion before signs and symptoms of a first concussion have resolved may result in rapid and usually fatal brain swelling.

    After a concussion, the levels of brain chemicals are altered. It usually takes about a week for these levels to stabilize again. However, recovery time is variable, and it's important for athletes never to return to sports while they're still experiencing signs and symptoms of concussion.

Apr. 02, 2014

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