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A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. [8] Symptoms may include headache, dizziness, difficulty with thinking and concentration, sleep disturbances, mood changes, a brief period of memory loss, brief loss of consciousness; problems with balance; nausea; blurred vision; and mood changes.
Second-impact syndrome shares all the risk factors of a concussion; that is, those who are at increased risk for a concussion are also at higher risk for SIS. Thus, people who participate in sports such as boxing , Association football , American football , baseball , rugby , basketball , ice hockey , pro wrestling , horse riding , and skiing ...
Differentiating between prolonged post-concussion syndrome (PCS, where symptoms begin shortly after a concussion and last for weeks, months, and sometimes even years) and CTE symptoms can be difficult. Research studies are examining whether neuroimaging can detect subtle changes in axonal integrity and structural lesions that can occur in CTE. [6]
Here's what to do if you hit your head really hard, have a concussion, and what to do if you think you have a concussion.
A concussion can lead to symptoms such as dizziness, headaches and memory problems. But concussions are treatable. The usual treatment is rest — for the body and the brain. In some cases ...
The guidelines give a similar timeframe for a concussed athlete to resume light exercise — as long as their symptoms are stable and the effort does not make them much worse.
Traumatic brain injury (TBI, physical trauma to the brain) can cause a variety of complications, health effects that are not TBI themselves but that result from it. The risk of complications increases with the severity of the trauma; [1] however even mild traumatic brain injury can result in disabilities that interfere with social interactions, employment, and everyday living. [2]
In some circumstances, concussive injury can cause microvascular disruption, hemorrhage, or subdural hematoma. [7] [10] Closed head injury (coup contrecoup) can damage more than the impact sites on the brain, as axon bundles may be torn or twisted, blood vessels may rupture, and elevated intracranial pressure can distort the walls of the ...