Where Normal Sexual Behavior Ends and Pathology Begins

Half the population reports a so-called deviant sexual interest. A clinical psychologist on what actually separates a kink from a disorder.

In the past century, psychiatry has redrawn the border between healthy and pathological sexuality so many times that the current map tells you more about the cartographers who drew it than about the territory itself.

Consider the record. In 1952, the first DSM classified homosexuality as a sociopathic personality disorder. In 1973, the American Psychiatric Association voted to remove it—effectively deciding who counted as ill. However, a residual diagnosis, ego-dystonic homosexuality, lingered until 1987. A century earlier, physicians published case studies in journals about masturbatory insanity. John Harvey Kellogg prescribed bland cereals, in part, to reduce the sexual appetites of American youth. These were not fringe cranks. They represented the medical consensus of their time, just confident as ours does today.

That record should teach diagnostic humility, and, to its credit, modern psychiatry has learned. The DSM-5, updated in 2013, draws a line its predecessors refused to draw: a paraphilia—an atypical sexual interest—is not a disorder. It becomes a paraphilic disorder only when it causes distress or impairment, or when acting on it harms someone who has not consented or cannot. Wanting is not a symptom. On paper, at least, your fantasies belong to you.

The distress trap

The trouble starts with that word, distress. Picture a man raised in a household where sex was unspeakable, now tormented by a fetish that harms no one. By the letter of the manual, his suffering qualifies him for a diagnosis. But the pathology sits less in his desire itself than in the condemnation he experienced as a boy. Treating the desire as the illness gets the arrow of causation backward.

Psychiatry ran this experiment once already. Ego-dystonic homosexuality diagnosed people not for their orientation but for hating it, which meant, in practice, diagnosing them for having internalized their culture’s contempt. When stigma generates the distress and distress generates the diagnosis, the manual ends up medicalizing prejudice with a straight face.

Clinicians see this trap weekly. The patient who arrives convinced his fantasies make him a freak rarely needs his fantasies removed. He needs to discover where he learned that his desire required a verdict.

Counting the deviants

Then there is the arithmetic problem. In a survey of a general population sample in Quebec, Christian Joyal and Julie Carpentier found that close to half of the respondents reported interest in at least one sexual activity classified as a paraphilia by the DSM, and roughly a third had acted on one. Voyeuristic and fetishistic interests topped the list. As it turns out, the manual’s catalog of atypical desires describes about half of your neighbors. A deviance that half the population shares is not exactly a deviance.

In 1905, Freud saw this coming. In Three Essays on the Theory of Sexuality, he argued that human sexuality is not born whole. Rather, it is assembled from component drives, erogenous zones, early attachments, and accidents of development. The tidy adult package we call “normal” is an achievement, not a default. The infant, as he put it, is polymorphously perverse. He claimed that every perversion magnifies or detaches some component of ordinary sexuality, and the fetishist differs from the rest of us only in proportion, not in kind. While you can quarrel with much of Freud’s work, the survey data have confirmed his theories on this point.

What the desire is doing

If frequency cannot help draw the line and distress draws it poorly, then what can? Here, the psychoanalytic tradition is valuable because it asks a different question. Rather than asking what this person does, it asks what the desire is doing inside the psyche and to the other person in the room.

Desire so often carries a whiff of the forbidden, because the forbidden is where it was forged.

According to psychodynamic theory, these desires originate in childhood, not from any single event, but from how the developing mind processes fear and shame. A boy is humiliated for being soft, a girl is taught that her body is dangerous, and a child is met with contempt when he or she bids for closeness. Each of these experiences leaves a wound that is buried, and buried material does not stay buried. It returns in disguise and becomes sexualized because eroticizing a fear is one of the oldest maneuvers of the psyche for mastering it. What was repressed returns to be expressed as a symptom. The fantasy restages the old scene with a different ending—the helpless child now directs the play, the shamed one does the shaming, and the abandoned one decides who leaves. Desire so often carries a whiff of the forbidden because that is where it was forged.

And sometimes the script barely matters, because the excitement itself is the point—not pleasure so much as regulation, a jolt of aliveness for someone who otherwise moves through life performing a self rather than inhabiting one.

Robert Stoller, who spent his career listening to erotic life, defined perversion as the erotic form of hatred. The mark of pathology, for him, was never the act but the fantasy animating it: a script in which the partner must be stripped of personhood, converted into a prop, punished in effigy for some old humiliation. The behavior on the surface can be identical. Two couples stage the same bondage scene. In one, the restraint is a game two subjects are playing together—negotiated, reversible, followed by breakfast and mild embarrassment about the laundry. In the other, one partner exists only as material for the other’s script. A camera could not tell these couples apart. A clinician listening to the fantasy can.

This is where clinical judgment comes into play. Rather than relying on a list of prohibited acts, it relies on a few observations. Are all those involved consenting, and are they able to do so? Is this a single aspect of a flexible erotic life, or is it the only key that opens the lock? Has arousal without the ritual become impossible? Has the behavior become compulsive, escalating and indifferent to cost? Does it consume a person’s marriage or career while promising relief that never comes? In the fantasy, does the other person get to exist?

By those measures, most kinks appear mundane. Wismeijer and van Assen studied BDSM practitioners and found that, on average, they were less neurotic, more securely attached, and just as happy as control subjects. This is likely because negotiating a scene requires more explicit communication about desire than most “vanilla” couples engage in over the course of a decade. Meanwhile, a man who compulsively pursues conventionally attractive women he despises, aroused by his contempt for them, would pass any behavioral screen for normality. His acts are ordinary. But what his desire is doing is not.

Diagnostic manuals catalog acts because they can be observed, counted, and coded for insurance purposes. However, the mind does not sort itself that way. It sorts by function—by what the desire accomplishes, defends against, repeats, or repairs.

The boundary does not run between behaviors. Rather, it runs through them, distinguishing between playful desire and compelling, repetitive desire; between a partner who is a subject and a partner who is a prop; and between an erotic life that expresses the self and one that holds it hostage.

Diagnosis is the clinician’s business, and the clinician should keep practicing the humility that history demands. The better question belongs to everyone, and it is not whether your desires are normal. It is what they are doing—to you, and to whoever else is in the room. And whether that person gets to be real.

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