Swelling of the brain tissue is usually how people describe concussion. It is particularly common in contact sports (i.e. boxing, rugby union, league, and football) where accidents occur when opponents collide with one another (1). Concussion Head Injury Symptoms may include: \tUnconsciousness \tLoss of memory \tDisorientation \tHeadaches \tDrowsiness \tVisual distortion Those neurological signs outlined above should be considered seriously due to the nature of long-term permanent effects and in some cases life threatening. In most cases it is highly recommended that the Head Injury person be taken to an A & M clinic or A & E department at a hospital for 24 \u2013 48 hours of observation. Stand down period Head Injury that occur in sport have a stand down period where they are prohibited to play for a specified period of time (i.e. NZ rugby union rules state that a player shall not play rugby for a minimum of 3 weeks or 12 days.