Definition: In medical terminology, a concussive injury is a type of traumatic brain injury (TBI) that occurs when there is a rapid and intense movement or impact to the head. The term "concussive" refers to the sudden and significant change in pressure on the brain that can lead to damage or loss of consciousness. The cause of concussive injuries varies, but they are typically caused by physical trauma, such as falling from heights, impacting a vehicle, or being struck by an object