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British authorities banned the term shell shock during World War II to avoid an epidemic of cases, and the term posttrauma concussion state was coined in 1939 to describe "disturbance of consciousness with no immediate or obvious pathologic change in the brain". [73] The term postconcussion syndrome was in use by 1941. [73]
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.
A normal brain (left) and one with advanced CTE (right) Specialty: Neurology, psychiatry, sports medicine: Symptoms: Behavioral problems, mood problems, problems with thinking [1] Complications: Brain damage, dementia, [2] aggression, depression, suicide [3] Usual onset: Years after initial injuries [2] Causes: Repeated head injuries [1] Risk ...
Concussed athletes had their last injury at least nine months before the MRI scans, and half were 26 months or more post-concussion. Detailed brain maps created with the scans showed that athletes ...
Concussions are a mild traumatic brain injury common in sports, though they can also be caused by falls and accidents. ... Doctors will also check a person’s long and short term memory, asking ...
Concussions can lead to poor grades. For premium support please call: 800-290-4726 more ways to reach us
Second-impact syndrome (SIS) occurs when the brain swells rapidly, and catastrophically, after a person has a second concussion before symptoms from an earlier one have subsided. This second blow may occur minutes, days, or weeks after an initial concussion, [ 1 ] and even the mildest grade of concussion can lead to second impact syndrome. [ 2 ]
Concussions may also have long term effects on the ability to learn and execute motor patterns. As compared to an individual with no concussions, due to damage to the brain resulting from concussion, a concussed individual may have reduced motor learning speeds and ability to progress in activity. [11]