concussion

(redirected from second impact syndrome)
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concussion

a jarring of the brain, caused by a blow or a fall, usually resulting in loss of consciousness

concussion

[kən′kəsh·ən]
(engineering)
Shock waves in the air caused by an explosion underground or at the surface or by a heavy blow directly to the ground surface during excavation, quarrying, or blasting operations.
(medicine)
A state of shock following traumatic injury, especially cerebral trauma, in which there is temporary functional impairment without physical evidence of damage to impaired tissues.
References in periodicals archive ?
If Sean Cavanagh was concussed and he played on and then took another hit, even if it was only a strong shoulder that caused the head to shake, he could have suffered a second concussion and second impact syndrome, which can be fatal if the player is not removed from play.
Countless children also suffer the very serious side effects of second impact syndrome.
A SCHOOLBOY rugby player has become the first person in Northern Ireland to die from second impact syndrome, a coroner ruled yesterday.
Earlier this week pathologist Dr Jack Crane, said the youngster had died from Second Impact Syndrome - brain damage caused by at least two blows to the head.