A state of psychological unstability, in which a person(s)looses all sense of reality, thus being drawn into a tunnel-visioned rage toward a target. This may manifest itself until complete destruction ensues.
1) A soldier witnessed his best friend die in war, the soldier then went into blood rage and shot at everything that moved. Until everyone was dead.

2) Depiction of blood rage in Rambo:First Blood, when John Rambo attacks the town armed with an M60.
by Liam867 April 4, 2008
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