The symptoms below may appear right away, or may not be noticed for hours, days, weeks or months before they are recognized to be concussion-related.6 No two concussions are the same, and each concussion will have its own set of symptoms and signs. As pointed out earlier, loss of consciousness is NOT required for a concussion to occur. Even years later, symptoms such as memory loss, movement disorders and even dementia may result from concussions, especially repeated concussions.
Swipe/Scroll Left or Right to view more | Loss of consciousness | Blurred vision | Difficulty remembering |
| Seizures or convulsions | Balance Problems | Fatigue or low energy |
| Amnesia | Sensitivity to light | Confusion |
| Headache | Sensitivity to noise | Drowsiness |
| “Pressure in the head” | Feeling slowed down | More emotional |
| Neck pain | Feeling like you're “in a fog” | Irritability |
| Nausea or vomiting | “Don't feel right” | Sadness |
| Dizziness | Difficulty concentrating | Nervousness or anxiousness |
From the Consensus Statement on Concussion in Sport (2009 and SCAT2 Resources)