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What are the signs and symptoms of a concussion?

You do not need to be “knocked out” or to lose consciousness to have a concussion. Signs and symptoms could be immediate or they may be delayed and not show for a period of time, perhaps days or even weeks following a hit.


  • Headache
  • Nausea
  • Dizziness
  • Visual disturbances
  • Light sensitivity
  • Noise sensitivity
  • Loss of consciousness
  • Memory loss
  • Vomiting
  • Loss of balance/poor coordination
  • Seizures or convulsions


  • Irritability
  • Personality changes
  • Inappropriate emotions
  • Sadness
  • Anxiety

Cognitive Impairment

  • Slow reaction times
  • Difficulty concentrating
  • Difficulty remembering
  • Confusion
  • Feeling in a fog
  • Feeling dazed

Sleep Disturbances

  • Trouble falling asleep
  • Sleeping more than usual
  • Sleeping less than usual
  • Drowsiness