Richard von Krafft-Ebing, supplied a great many terms in the several editions of his influential medical compendium, Psychopathia Sexualis, first published in 1886. These included “antipathic sexual instinct” (disliking what one should find erotic based on one’s sex or gender), “eviration” (a deep change of character in which a male’s feelings and inclinations become those of a woman), “defemination” (a deep change of character in which a female’s feelings and inclinations become those of a man), and “metamorphosis sexualis paranoica” (the psychotic delusion that one’s body was transforming
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