It is not always easy to know if someone has a concussion. You don’t have to pass out (lose consciousness) to have a concussion.
Symptoms of a concussion range from mild to severe and can last for hours, days, weeks, or even months. If you notice any symptoms of a concussion, contact your doctor.
Symptoms of a concussion fit into four main categories:
Thinking and remembering
- Not thinking clearly
- Feeling slowed down
- Not being able to concentrate
- Not being able to remember new information
Physical
- Headache
- Fuzzy or blurry vision
- Nausea and vomiting
- Dizziness
- Sensitivity to light or noise
- Balance problems
- Feeling tired or having no energy
Emotional and mood
- Easily upset or angered
- Sad
- Nervous or anxious
- More emotional
Sleep
- Sleeping more than usual
- Sleeping less than usual
- Having a hard time falling asleep
via Concussion: Causes, Symptoms, Diagnosis, Treatment, and Prevention.