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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 ]
Physiological and psychological factors present before, during, and after the injury are all thought to be involved in the development of PCS. [13] [needs update] Some experts believe post-concussion symptoms are caused by structural damage to the brain or disruption of neurotransmitter systems, resulting from the impact that caused the concussion.
The condition may develop in people who receive a second blow days or weeks after an initial concussion before its symptoms have gone away. [27] No one is certain of the cause of this often fatal complication, but it is commonly thought that the swelling occurs because the brain's arterioles lose the ability to regulate their diameter, causing ...
A young person who receives a second concussion before symptoms from another one have healed may be at risk for developing a very rare but deadly condition called second-impact syndrome, in which the brain swells catastrophically after even a mild blow, with debilitating or deadly results.
After being recommended to try neurotherapy by her sports psychologist, Glenn found that it worked to calm her sympathetic nervous system by training her brain to automatically calm down.
Second-impact syndrome is a result of a second head injury before the brain has adequate time to heal between concussions. [3] It typically give signs and symptoms of a post-concussion syndrome (visual, motor, or sensory abnormalities and difficulties with cognitive processes).
Tua Tagovailoa has finally cleared the NFL's concussion protocol more than a month after entering it. ... Julia Child's 10-second tip for perfect poached eggs is a game-changer.
For days, the NFL told us our eyes were lying to us when it came to the health of Tua Tagovailoa’s head.. Regardless of the footage showing Tagovailoa’s helmet slamming against the turf ...