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Wiktionary
piblokto

n. 1 A condition affecting dogs or other animals in the Arctic, characterized by aggressive behavior and seizures. 2 A condition affecting the Inuit peoples in winter, characterised by a period of frenzied activity or irrational behaviour, followed by unconsciousness or stupor.

Wikipedia
Piblokto

Piblokto, also known as pibloktoq and Arctic hysteria, is a condition most commonly appearing in Inughuit societies living within the Arctic Circle. Piblokto is a culture-specific hysterical reaction in Inuit, especially women, who may perform irrational or dangerous acts, followed by amnesia for the event. Piblokto may be linked to repression of the personality of Inuit women. The condition appears most commonly in winter. It is considered to be a form of a culture-bound syndrome, although more recent studies (see Skepticism section) question whether it exists at all. Piblokto is also part of the glossary of cultural bound syndromes found in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV).