This article is from the magazine Les Dossiers de Sciences et Avenir n°223 dated October/December 2025.
This summer, Flo plans to spend two weeks in Norway. A trip that delights her, but also deeply worries her. Indeed, she suffers from dissociative identity disorder (DID): within her, several "parts" coexist. "My fear, when leaving the house, is that some of them will wake up in a panic, saying to themselves: “But what are we doing in Norway?” » Because its parts – also called alters (for alterations of consciousness) or identities – each have an independent memory. And they can have different first names, ages, genders, or tastes.
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