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 ?
The true incidence of second impact syndrome is unknown.
A spokesman for Acquired Brain Injury Ireland has revealed that, if he was concussed as Harte stated, then Cavanagh put himself in danger of a potentially fatal second impact syndrome.
LESSONS will be learned after a teenage rugby player became the first person here to die from second impact syndrome, the Education Minister said yesterdaty.
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.
State pathologist Jack Crane believes he died from Second Impact Syndrome - two heavy knocks close to each other which caused swelling in the brain.
But with input from two senior and experienced neurosurgeons, Stephen Cooke and Brian Herron, he concluded Benjamin died from cerebral oedema, subdural haemorrhage and Second Impact Syndrome.