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Symptoms Headache Dizziness Balance problems Unsteadiness Light sensitivity Vision changes Nausea Drowsiness Amnesia Sensitivity to noise Tinnitus Irritability Feeling slowed down or “in a fog” Difficulty concentrating Difficulty remembering Low energy, drowsiness Sleep disturbance Increased emotionality Signs Loss of consciousness Amnesia Confusion Disorientation Appearing dazed Eye-movement abnormality Inappropriate emotionality Physical incoordination Imbalance Seizure Slowed verbal responses Based on information in reference 8