The victim may or may not lose consciousness. Early signs include dazed appearance, headache, confusion, nausea, dizziness, problems with coordination, double vision, and sensitivity to light and sound. Later, the patient may experience sleep problems, excessive tiredness, depression, change in behavior or personality, or inability to perform usual daily activities.
Concussions are somewhat common among sports participants.
According to the Brain Injury Association, about 82,000 brain injuries occur every year during recreational sports activities. Some of the most risky sports include football, boxing, soccer, and skiing. In the most serious cases, a concussion can lead to death. The American Academy of Neurology reports about 900 people die annually from sports-related brain injury. Currently, there is no medication to promote brain healing.