Concussion Symptom Index
| Symptom | Absent | Present |
|---|---|---|
| Headache | 0 | 1 |
| Nausea | 0 | 1 |
| Balance problems/dizziness | 0 | 1 |
| Fatigue | 0 | 1 |
| Drowsiness | 0 | 1 |
| Feeling like “in a fog” | 0 | 1 |
| Difficulty concentrating | 0 | 1 |
| Difficulty remembering | 0 | 1 |
| Sensitivity to light | 0 | 1 |
| Sensitivity to noise | 0 | 1 |
| Blurred vision | 0 | 1 |
| Feeling slowed down | 0 | 1 |
| Total |
Source: C. Randolph, PhD, Loyola University Medical Center, written communication, 2005.