Concussions, a.k.a. mild traumatic brain injury, are caused by a direct blow to the head or body resulting in movement of the brain within the skull. Concussion can occur with or without loss of consciousness and symptoms can include headache, nausea, confusion or dizziness. Both physical and mental rest is recommended as part of the treatment plan. Returning to activity too soon after risks a second concussion that can lead to a more serious condition known as second-impact syndrome: a swelling of the brain that can result in severe disability or even death.
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