Concussion is an injury to the brain caused by being hit on the head, as often happens in motor vehicle collisions, fights or contact sports such as football. It is the most common form of traumatic brain injury. Related terms include mild brain injury, mild traumatic brain injury (MTBI), mild head injury (MHI), and minor head trauma. People suffering from it are usually monitored in hospital. The main reason for this is the risk of bleeding in the brain; this is common, and can be life-threatening.
Common symptoms of concussion include: headache, dizziness, fatigue, problems with vision, confusion and loss of consciousness. A person with a mild concussion may have nothing more than a headache or brief confusion. In more severe cases, symptoms tend to last longer, and may include loss of consciousness.
Symptoms may last less than a week in minor cases, but recovery from more severe concussions can take up to 4 weeks.
References[change | change source]
- Pellman EJ, Viano DC (2006). "Concussion in professional football: Summary of the research conducted by the National Football League's Committee on Mild Traumatic Brain Injury" (PDF). Neurosurgical Focus 21 (4): E12. PMID 17112190. http://www.aans.org/education/journal/neurosurgical/Oct06/21-4-12-1028.pdf.