- Dazed / stunned / dinged
- Confused / in a fog
- Balance problem / unsteadiness
- Visual disturbance
- Ringing in ears / hearing problem
- Nausea / vomiting
- Drowsy / fatigued / slowed down
- Difficulty concentrating
- Amnesia / difficulty remembering
- Headache
- Irritable
- Not right
- Emotional lability
- Loss of consciousness or unresponsiveness
- Seizure or convulsive activity
- Exam showing changes in memory and speech, eye motion and pupils, coordination, and gait
The study of concussion is evolving continually and current attention to the injury is accelerating medical understanding and assisting in development of treatment protocols.