A concussion is a form of minor brain trauma in which the function of the brain becomes altered but no abnormalities can be detected by imaging tests such as CT scans. Symptoms of a concussion are typically short-lived and go away on their own. The symptoms may be obvious or may be so subtle that the affected person does not realize they have suffered a concussion. Some of the more common symptoms of concussion include
- feeling foggy, or that one's thinking is slowed or altered,
- irritability or emotional changes,
- problems concentrating or remembering new information.
Sometimes people with a concussion will lose consciousness (pass out), but this does not happen in most cases. Not all symptoms of concussion will occur in every case; sometimes the symptoms differ depending on the location and extent of the injury. For example, some people suffering from a concussion may sleep excessively while others have insomnia. Symptoms of concussion can last for days, weeks, or occasionally even longer.
Concussion is caused by a traumatic injury to the head. Concussion injuries are particularly common in those (including children and teens) who participate in athletic events.
Other concussion symptoms and signs
- Blurred Vision
- Difficulty Concentrating
- Difficulty Remembering New Material
- Difficulty Thinking Clearly
- Feeling Slowed Down
- Increased Sleeping
- Loss of Consciousness
- Memory Loss
- Mental Fogginess
- Mood Changes
- Sensitivity to Bright Lights
- Sensitivity to Loud Sounds
- Slower Reaction Times
Main Article on Concussion Symptoms and Signs
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United States. Centers for Disease Control and Prevention. "Facts About Concussion and Brain Injury." <http://www.cdc.gov/concussion/pdf/Fact_Sheet_ConcussTBI-a.pdf>.