It can result from a blow to any part of the head, including the face, scalp, or skull.
Some concussions lead to slow bleeding in the head and other problems.
Causes Generally, concussions follow a blow to the head sustained in a fall, a car accident, or a sports mishap. Immediately after a blow to the head, victims of concussion usually suffer a temporary loss of consciousness. Later, you may develop headache, dizziness, or fatigue. You also may have cuts, bruises, and swelling. You may not see clearly or be fully awake.