A dissociative episode characterized by a period of brooding followed by an outburst of violent, aggressive, or homicidal behavior directed at people an objects. The episode tends to be precipitated by a perceived slight or insult and seems to be prevalent only among males. The episode is often accompanied by persecutory ideas, automatism, amnesia, exhaustion and a return to premorbid state following the episode. Some instances of amok may occur during a brief psychotic episode or constitute the onset or an exacerbation of a chronic psychotic process. The original reports that used this term were from Malaysia. A similar behavior pattern is found in Laos, Philippines, Polynesia (cafard or cathard), Papua New Guinea, and Puerto Rico (mal de pelea), and among the Navajo (iich'aa).