👉 The term "concuss" is a medical term that refers to an injury or condition in which a person's brain, spinal cord, and other organs are shaken too much during an event. This can happen when someone falls down, gets hit by a car, or even suffers from a stroke. When concussive injuries occur, the brain, spinal cord, and other structures may become disorganized or damaged, leading to symptoms such as headache, dizziness, nausea, confusion, loss of consciousness