A concussion, also known as a mild traumatic brain<unk>  (mTBI), is a<unk><unk>  that temporarily affects brain functioning. Symptoms may include loss of consciousness (LOC); memory loss;<unk> aches; difficulty with thinking, concentration, or balance; nausea; blurred vision; sleep disturbances; and mood changes. Any of these symptoms may begin immediately, or appear days after the<unk> . Concussion should be suspected if a person indirectly or directly hits their<unk>  and experiences any of the symptoms of concussion. It is not unusual for symptoms to last 2 weeks in adults and 4 weeks in children. Fewer than 10% of sports-related concussions among children are associated with loss of consciousness. Common causes include motor vehicle collisions, falls, sports<unk> es, and bicycle accidents. Risk factors include drinking alcohol and a prior history of concussion. The mechanism of<unk>  involves either a direct blow to the<unk>  or forces elsewhere on the body that are transmitted to the<unk> . This is believed to result in neuron dysfunction, as there are increased glucose requirements, but not enough blood supply. A thorough evaluation by a qualified medical provider (such as a physician, physician assistant, or nurse practitioner) is required to rule out life-threatening<unk> <unk> es,<unk> es to the cervical spine, and neurological conditions. Glasgow coma scale score 13 to 15, loss of consciousness for less than 30 minutes, and memory loss for less than 24 hours may be used to rule out moderate or severe traumatic brain<unk> es. Diagnostic imaging such as a CT scan or an MRI may also be required to rule out severe<unk> <unk> es. Routine imaging is not required to diagnose concussion. Prevention of concussions includes the use of a helmet when bicycling or motorbiking. Treatment includes physical and cognitive rest for 1–2 days, with a gradual step-wise return to activities, school, and work. Prolonged periods of rest may slow recovery and result in greater depression and anxiety. Paracetamol (acetaminophen) or NSAIDs may be recommended to help with a<unk> ache. Physiotherapy may be useful for persistent balance problems; cognitive behavioral therapy may be useful for mood changes. Evidence to support the use of hyperbaric oxygen therapy and chiropractic therapy is lacking. Worldwide, concussions are estimated to affect more than 3.5 per 1,000 people a year. Concussions are classified as mild traumatic brain<unk> es and are the most common<unk> of TBIs. Males and young adults are most commonly affected. Outcomes are generally good. Another concussion before the symptoms of a prior concussion have resolved is associated with worse outcomes. Repeated concussions may also increase the risk in later life of chronic traumatic encephalopathy, Parkinson's disease and depression. Video explanation of concussions in children
types of Head injury
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medical cause of Infection
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History of neurology and neurosurgery
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