Misclassifying Ego-Syntonic Violence as Obsessive Compulsive Disorder

The DSM in Forensic Practice

Although the DSM-5-TR explicitly cautions that it was developed for clinical, educational, and research purposes rather than to determine legal standards, it is nonetheless regularly invoked in forensic contexts. The manual’s “Cautionary Statement for Forensic Use” warns that its diagnostic categories may be misapplied in legal settings, where the presence of a mental disorder does not by itself establish criteria such as legal responsibility, competence, or disability.² Despite this caveat, courts and counsel frequently cite DSM definitions in pleadings, experts structure reports around its categories, and judges expect its terminology as psychiatry’s shared language. As the forensic literature has noted,³ the manual’s formulations have repeatedly shaped judicial reasoning and statutory interpretation, underscoring that its definitions are not merely clinical but carry jurisprudential weight.

This practical reliance means that definitional choices, such as replacing ego-dystonic with unwanted and distressing, can reverberate in adversarial settings, inviting gratification-driven or volitional ideation to be potentially misconstrued as “obsessional.” The stakes are high: subtle semantic variations can produce outsized forensic consequences. As Frances⁴ observed, every DSM revision carries an inherent risk of unforeseen forensic problems, in part because work-group members are rarely trained in legal interpretation and may not anticipate how their language will be parsed in court. He noted that, even when DSM wording is consistent enough for clinical and research purposes, it “does not always stand up well to the technical rigor of precise legal dissection,” because “lawyers parse every phrase for meanings never foreseen by those writing primarily for a psychiatric audience” (Ref. 4, p 11). Writing retrospectively about Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV), Frances described how a seemingly trivial editorial change, from “and” to “or” in the paraphilia criteria was misconstrued to allow the act of rape alone to qualify as a mental disorder, thereby facilitating the indefinite psychiatric commitment of offenders after their prison terms.⁴ This episode illustrates how editorial nuance in diagnostic language can translate into profound legal outcomes once the DSM enters the courtroom.

More broadly, DSM terminology, however intended, has practical influence in forensic settings. The same interpretive weight applied to other diagnostic categories can extend to the language of OCD, where the omission of an ego-dystonicity requirement creates conceptual ambiguity. This ambiguity is consistent with the DSM’s broader evolution from psychodynamic formulations toward a descriptive, largely atheoretical model that prioritized reliability over phenomenological meaning.^5,–,7

Aggressive Thoughts in OCD versus Offenders

To understand the diagnostic risk more precisely, it is essential to examine how violent intrusive thoughts in OCD differ in subjective quality and emotional tone from persistent violent ideation in offenders. The DSM-5-TR recognizes four broad “themes” or “dimensions” of obsessive-compulsive disorder, which describe recurrent patterns rather than discrete subtypes: cleaning, symmetry, forbidden or taboo thoughts, and harm.¹ Within these, the “forbidden or taboo” and “harm” dimensions encompass obsessional intrusions involving violent, sexual, or moral content that may resemble violent ideation seen in forensic populations.

Individuals with OCD may experience disturbing thoughts or mental images centering on harm, violence, or transgression, such as the sudden image of pushing someone into traffic, poisoning a loved one’s meal, or striking a pedestrian while driving. These intrusions arise unbidden and provoke intense fear of losing control, committing moral wrongdoing, or being responsible for catastrophic harm. In response, individuals often perform rituals, avoid potentially dangerous settings, or repeatedly seek reassurance to neutralize the thoughts, prevent feared outcomes, and reaffirm their moral integrity. Such experiences are quintessentially ego-dystonic: they are not impulses to act but fears of losing control over what one most abhors. Despite their disturbing content, these obsessive thoughts are almost never acted upon, a point repeatedly affirmed in clinical practice and research.⁸

A striking illustration appears in what clinicians have termed pedophilia-themed OCD (P-OCD), in which individuals experience intrusive fears of being sexually attracted to children or of losing control and offending. Despite the content, these individuals feel horror and moral disgust, often avoiding children, ruminating about their moral worth, or, in rare cases, briefly checking to ensure they feel no arousal. Their goal is reassurance and relief from anxiety, not gratification. This phenomenology, marked by panic, guilt, and attempts to neutralize distress, differs sharply from ego-syntonic paraphilic interests, where the same imagery may be emotionally reinforcing and volitional rather than resisted. Such presentations have significant forensic implications, because intrusive sexual or violent obsessions can be misinterpreted as evidence of deviant intent if the evaluator fails to appreciate their ego-dystonic and anxiety-driven nature.⁹

The phenomenological divide between ego-dystonic obsession and ego-syntonic ideation has often been obscured in popular discourse. In everyday language, terms like “obsessive” and “compulsive” are used loosely to describe any intense preoccupation or repetitive behavior, regardless of its underlying motivation. This linguistic drift blurs the conceptual boundary between anxiety-driven intrusion and gratification-driven repetition, a confusion that has occasionally carried into forensic and institutional language as well. A 1975 FBI Law Enforcement Bulletin¹⁰ described exhibitionism, kleptomania, and pyromania as “obsessive-compulsive behavior,” applying the label to ego-syntonic, gratification-based acts rather than to genuine obsessional conflict. Around the same period, Eugene Revitch¹¹ clarified this conceptual confusion by distinguishing the psychologically driven yet volitional “compulsive offender” from the true obsessive-compulsive patient. He emphasized that, although both display repetitive, tension-driven behavior, their underlying dynamics differ fundamentally: in obsessional illness, intrusive ideas are managed through defenses such as isolation and undoing, producing anxiety and resistance; in compulsive offenders, underlying sexual and aggressive conflict is enacted through violence.

Although both the obsessive-compulsive patient and the compulsive offender may describe powerful internal preoccupations, the offender’s experiences diverge profoundly in emotional tone and psychological meaning, a distinction repeatedly supported by empirical research. Individuals with OCD consistently describe the obsessional intrusions as more emotionally disturbing, more difficult to control, and more alien or morally incongruent than those reported by participants in either nonclinical or other clinical groups.^12,–,14 Meta-analyses and clinical studies have found that individuals with OCD experience these thoughts with significantly greater distress, guilt, and disapproval and are more likely to fear they might act on them, despite lacking any genuine intent or desire to do so.^15,16 These intrusions are also frequently disconnected from external events, emotionally disruptive, and perceived as threatening to one’s identity or moral integrity.^17,18

In contrast, violent ideation in offenders typically serves psychological functions, such as fantasy rehearsal, affect regulation, or emotional release.¹⁹ The offender literature consistently underscores these ego-syntonic functions. Gee and colleagues²⁰ identified four central roles of sexual fantasy in offenders (affect regulation, sexual arousal, coping, and modeling), demonstrating how fantasy facilitates emotional control and behavioral rehearsal rather than evoking moral conflict. Meloy²¹ described violent fantasy as fostering grandiosity and omnipotence, compensating for perceived inadequacy, whereas Carabellese and colleagues²² observed that fantasies of sexual coercion and dominance can reinforce narcissistic functioning and stimulate feelings of power and control preceding an offense. Patel²³ similarly noted that violent thoughts and fantasies may become integral to an offender’s self-concept, sustaining identity and regulating emotion in accordance with individual need.

This violent ideation may be described as unwanted in the sense that it is disruptive or preoccupying, particularly when it dominates thought or interferes with functioning. It is not experienced as alien to the self or morally dissonant. Rather, it is emotionally gratifying and psychologically congruent, often revisited and elaborated over time. Where the OCD patient seeks reassurance to alleviate anxiety and affirm that the patient would never act on a feared impulse, the offender may resist only out of fear of consequences, not because of moral dissonance. Although moral conflict may at times occur in ego-syntonic behavior, it differs fundamentally from the alienation and moral incongruence of ego-dystonic phenomena. In the former, distress may arise from the consequences of the thought, guilt, shame, or social risk, whereas in the latter, it stems from the mere presence of the thought itself, which feels alien and repugnant.

In clinical practice, obsessions are widely understood to be ego-dystonic, yet the DSM-5-TR does not explicitly require this feature. This omission allows any form of distress, moral, practical, or situational, to be mistaken for the internal violation that defines true obsessional experience. Without this explicit distinction, DSM criteria risk misclassifying repetitive but self-congruent behaviors as obsessional illness, blurring the boundary between pathological suffering and volitional gratification. Although this discussion centers on violent ideation, the same diagnostic ambiguity applies to other recurrent preoccupations that blur moral or volitional boundaries, including compulsive, taboo, or transgressive urges. Clarifying this boundary is essential to preserve the conceptual integrity of OCD and to prevent its misuse in forensic contexts.

Heirens and Retrospective OCD Framing

The case of William Heirens was widely publicized in mid-20^th-century Chicago. At age 17, Mr. Heirens was arrested and charged with the murders of two women and one young girl, along with more than 100 burglaries. A former juvenile offender who had gained early admission to the University of Chicago, he underwent psychiatric evaluation as part of efforts to understand the psychological motivations behind his crimes.²⁴ Mr. Heirens described a longstanding pattern of tension-driven behavior beginning in childhood, including entering homes and stealing undergarments as early as age 9. Psychiatric evaluation revealed persistent fetishistic interests and recurrent burglaries accompanied by reported overpowering “urges” to break into homes, often linked to sexual arousal and mounting physical tension, and reported headaches and other somatic symptoms when he attempted to resist.²⁴

He described efforts to suppress these urges through repetitive planning and destruction of plans: “When I got these urges I would take out plans and draw how to get into certain places. I would burn up the plans…I must have drawn about 500” (Ref. 24, p 323). In another account, he described an escalating struggle to resist: “I resisted for about two hours…I tore sheets out of place and went into a sweat…I put on my clothes and went out…I went out and burglarized that night” (Ref. 24, p 323). These descriptions capture intense, repetitive ideation accompanied by distress and vigorous attempts at resistance, features that can superficially resemble obsessional phenomena when viewed through a purely descriptive lens.

Yet there was no evidence in the psychiatric report of feelings of guilt or moral conflict surrounding his burglaries or murders, suggesting that his violent behavior and accompanying fantasies were psychologically coherent and emotionally reinforcing rather than experienced as alien or morally incongruent. His distress and suppression efforts appear best understood as pragmatic attempts to manage mounting tension and opportunity, not as anxiety-driven efforts to neutralize a feared, morally repugnant thought. His notebooks and statements²⁴ reflected concern with self-preservation, academic success, and making his parents proud, indicating that his wish to stop offending was tied more to protecting his future and maintaining approval than to moral revulsion toward the fantasies themselves. Read this way, Mr. Heirens’s presentation becomes a stress test for the DSM’s current definition of obsessions: it can look “obsessional” by checklist but disintegrates under phenomenological scrutiny once ego-syntonic reinforcement is made explicit. Rather than indicating OCD, this pattern aligns more closely with Revitch’s concept of the compulsive offender; repetitive, tension-driven behavior that may be partially resisted yet remains psychologically congruent and emotionally rewarding.¹¹ Similarly, Schlesinger described such offenders as sustained by a dual motive: gratification and relief of mounting inner tension.²⁵

Although Mr. Heirens’s case illustrates the theoretical potential for misclassification, contemporary court cases show how such interpretive errors have materialized in practice. That same vulnerability appears in modern courts: in State v. Houston²⁶ and R v. Grehan,²⁸ experts characterized ego-syntonic, emotionally congruent deviant ideation as obsessive-compulsive, demonstrating how imprecise psychiatric labeling can blur the boundary between illness and agency.

OCD in the Modern Courtroom

When evaluators construe gratification-driven or emotionally congruent ideation as “obsessional,” the result can be diagnostic distortion, mitigation, or even altered sentencing. The following examples, from the United States, Australia, and India, demonstrate how diagnostic imprecision may shape forensic outcomes.

The case of Robert Cameron Houston demonstrates how violent ideation can be misclassified as OCD. Mr. Houston’s criminal history began in early adolescence and followed a pattern of escalating sexual violence. At age 14, he attempted to rape his teenage stepsister at knifepoint. A year later, he attempted to rape his aunt, also at knifepoint. Both incidents resulted in adjudication for aggravated sexual assault and led to his placement in a residential treatment facility for juvenile sex offenders.²⁶

Only two months into treatment, Mr. Houston allegedly attempted to sexually assault a female staff member. He later told others he wanted to harm and violate her, statements that, combined with his earlier offenses, suggest entrenched violent ideation. This culminated in 2006, when at age 17, Mr. Houston raped and murdered a youth counselor who had offered him a ride during a snowstorm. His affect was reported as flat during his confession.²⁶

A forensic expert for the defense testified that Mr. Houston’s behavior met criteria for OCD, citing his reported inability to control recurring thoughts of sexual violence.²⁸ Her testimony, presented in support of risk mitigation, suggested that cognitive-behavioral therapy could reduce future danger by addressing what she interpreted as OCD-related intrusive thoughts. Although the court ultimately sentenced him to life without parole, her opinion illustrates the diagnostic ambiguity that can arise in these cases.

Mr. Houston’s case underscores the central concern: that vague or overly inclusive diagnostic language can lead to the misapplication of OCD criteria in forensic settings. Although a defense expert attributed his behavior to obsessive thoughts, his longstanding pattern of sexually aggressive conduct, coupled with his own statements about wanting to harm and assault a woman, suggested ideation more consistent with ego-syntonic, emotionally congruent violence. The structure and function of his fantasies, marked by repetition, emotional flatness, and alignment with behavior, indicate a psychologically reinforced pattern, not the anxiety-driven moral conflict characteristic of OCD.

A similar interpretive vulnerability appeared in the Queensland Court of Appeal decision R v. Grehan.²⁸ Gregory Bryan Grehan accumulated more than 44,000 images and numerous videos of child-exploitation material over several years. At sentencing, a psychologist attributed this pattern to chronic obsessive-compulsive disorder, explaining that his downloading, cataloguing, and masturbatory behavior were driven and maintained by obsessive, ritualistic processes. In its reasons, the court echoed this characterization, observing that the persistence of the collection was attributable to his “compulsive obsessive psychiatric disorder” and reduced the sentence in light of that explanation.

In Australia, the DSM-5 is now the primary system for identifying mental health conditions,²⁹ although the International Classification of Diseases (ICD-10) is also sometimes used; both systems emphasize observable symptoms over underlying causes or social context. This descriptive emphasis may help explain how Mr. Grehan’s behavior was construed as obsessive rather than volitional.

The factual record depicts a pattern far more consistent with ego-syntonic repetition than with genuine obsessional conflict.²⁸ Mr. Grehan deliberately paid to access, organize, and store the images, reportedly masturbated to them, and resumed collecting after briefly erasing his files, behavior sustained by gratification and habit rather than by intrusive fear or moral dread. His remorse, as described, appeared reactive to the consequences of his behavior, particularly its impact on his own family, rather than intrinsic to the ideation itself.

A related example appears in a 2018 bail appeal before the High Court of Kerala, summarized by Freckelton,³⁰ in which the court accepted an expert’s opinion that the defendant’s violent outburst was linked to severe obsessive-compulsive disorder and granted bail on that basis. Although the underlying clinical validity of the diagnosis is unclear, the case demonstrates how invoking an OCD formulation can function as a mitigating frame in violent offenses, reinforcing the need for greater diagnostic precision and phenomenological scrutiny in forensic contexts.

Forensic Implications

Although OCD is not among the most frequently litigated diagnoses in criminal courts, it sometimes appears in mitigation claims, as illustrated by the cases discussed above. Genuine OCD may have mitigating relevance when obsessional distress substantially compromises judgment or functioning, but not when ideation is ego-syntonic, emotionally congruent, or goal-directed. OCD, by contrast, rarely satisfies legal insanity standards.

Most jurisdictions require an impaired ability to appreciate the wrongfulness of one’s conduct. The DSM-5-TR notes that the majority of individuals retain good or fair insight and recognize that their obsessions and compulsions are excessive or unreasonable, whereas only a small minority, approximately four percent, exhibit absent insight or delusional conviction (for example, being fully convinced that catastrophic harm will occur unless a checking ritual is performed a specific number of times). Even in such cases, the feared outcome is irrational, but the individual’s basic understanding of right and wrong remains intact. Cognitive and moral awareness are therefore generally preserved, even when symptoms are severe. Moreover, moral awareness in OCD is often heightened rather than diminished. Many individuals experience excessive guilt, inflated responsibility, and heightened moral sensitivity surrounding the possibility of causing harm, particularly in subtypes such as scrupulosity, where obsessions focus on moral or religious themes^31,32 that fall within the unacceptable or taboo thoughts dimension of OCD. These features reflect maladaptive moral cognition,^31,33 not an incapacity to distinguish right from wrong, and thus do not meet the cognitive threshold required for insanity in most jurisdictions.

Relative to criminal cases, obsessive-compulsive disorder is more often encountered in civil forensic evaluations. It most commonly arises in matters involving functional impairment, such as disability determinations, reasonable accommodations, fitness-for-duty evaluations, parental-fitness disputes, and decisional-capacity assessments (including testamentary capacity and medical decision-making). Its infrequency in criminal contexts may paradoxically increase the likelihood that courts rely on DSM checklist language rather than on the phenomenology distinguishing ego-dystonic obsessions from ego-syntonic ideation.

Beyond questions of mitigation or insanity, misidentifying ego-syntonic violent ideation as obsessional has additional forensic consequences. It can distort risk assessment by framing volitional, emotionally reinforcing behavior as anxiety-driven conflict, leading evaluators to underestimate an offender’s capacity for recidivism or escalation. It can also misdirect intervention: individuals may be referred to anxiety-focused treatments, such as exposure and response prevention, rather than to violence-focused rehabilitation grounded in the risk-need-responsivity model,^34,35 which targets criminogenic factors, such as entitlement, moral disengagement, and emotional dysregulation. Maintaining diagnostic precision therefore safeguards not only culpability determinations but the accuracy of risk evaluations and the appropriateness of mandated treatment.

A Phenomenological Approach to Assessment

Differentiating ego-dystonic obsessions from ego-syntonic violent ideation requires attention to phenomenological tone rather than surface description. Individuals in either group may describe their thoughts as unwanted, distressing, or intrusive, but these terms conceal fundamentally different inner experiences. The examiner must elicit how the thought is experienced, its emotional tone, moral meaning, and subjective conflict, while avoiding phrasing that implies a preferred or exculpatory answer.

To accomplish this, evaluative questions should be neutral, open-ended, and phenomenologically targeted, focusing on how the thought feels, when it emerges, and what it signifies to the person. The goal is to uncover whether the thought is resisted because it violates the self (ego-dystonic) or merely managed because it interferes with function or carries risk (ego-syntonic). The sample prompts in Table 1 illustrate this approach.

Key Clinical and Forensic Teaching Point

Both OCD patients and individuals with violent ideation may report thoughts that are recurrent, distressing, or resisted. The distinction lies in the motivational and moral structure of the experience: in OCD, the thought is resisted because it violates the self, it is feared, rejected, and morally incongruent; in violent ideation, the thought is managed because it interferes with the self’s goals or risks exposure, it remains ego-syntonic, emotionally reinforcing, or gratifying, despite its consequences. Accordingly, the evaluator should privilege phenomenological tone over descriptive form, listening for moral dread versus frustrated craving, alien fear versus congruent desire, and self-condemnation versus self-justification. These nuances determine not only diagnostic accuracy but also the ethical and forensic integrity of risk assessment.