Boxing

Boxing is a combat sport where two participants, with the same weight to fight with each other with their fists. Boxing's rule is to hit only above the belt . So upper part of their body is box brutally especially the head part which causes traumatic brain injury. To some boxers, resulting loss of consciousness , coma or death.
Manifestation of Head Injury:
unconsciousness
headache
vertigo
confusion or delirium
restlessness
changes in body temperature
pupillary abnormalities
sudden onset of neurologic deficit