But, the DSM-5 makes the distinction between paraphilic interests, and paraphilia disorders, now acknowledging that people can have unusual sexual interests, with no distress or dysfunction. In Scandinavia, they abolished the paraphilia diagnoses several years ago, with no regrets or reconsiderations in the time since. Recent research in Canada suggests that nearly half the population endorses interest in “unusual” sexual practices. Which begs the question if anyone really knows what “usual” or “normal” actually is.
Source: 5 Sex/Relationship Myths Therapists Should Stop Believing | Psychology Today