concussion(redirected from Concussion-per Colorado medical society)
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a jarring of the brain, caused by a blow or a fall, usually resulting in loss of consciousness
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.
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.