[Solved] Krafft-Ebing viewed sexual deviations as untreatable mental diseases. Fetishism: Sexual attraction to objects that become sexual symbols. Perversion: A deviation from what is considered normal or acceptable in sexual behavior, often carrying a negative judgment. Voyeurism: Observing an unsuspecting person who is naked, disrobing, or having sex. Paraphilia: Any intense and persistent sexual interest other than sexual interest in genital stimulation or preparatory fondling with phenotypically normal, physically mature, consenting human partners.