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Today in History: Pokémon episode triggers seizures in 685 children

12/16/2025

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Summary

Story summary

On December 16, 1997, the Pokémon anime episode "Denno Senshi Porygon" aired in Japan, causing photosensitive epileptic seizures in 685 children. The incident, known as "Pokémon Shock," led to over 600 hospitalizations, highlighting the risks of flashing lights in media. This event raised awareness about photosensitivity and its effects on viewers.

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Story summary

On December 16, 1997, the Pokémon anime episode "Denno Senshi Porygon" aired in Japan, causing photosensitive epileptic seizures in 685 children. The incident, known as "Pokémon Shock," led to over 600 hospitalizations, highlighting the risks of flashing lights in media. This event raised awareness about photosensitivity and its effects on viewers.