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Sexual dysfunction related mental disorders

Sexual offences

Offences range from prostitution and indecent exposure to rape. Other types of offences (e.g. homicide, assault, robbery, theft, and burglary) may have a sexual component. Sex offending, sexual deviation (b p. 480), and inappropriate sexual behaviour (a range of sexual behaviours which cause offence and/or harm to others) are overlapping but distinct concepts. A man who commits a sexual offence against a child may or may not be a paedophile and a man who exposes himself may or may not be an exhibitionist. A 17-yr-old male who has sexual intercourse with his 15-yrold girlfriend is committing a sexual offence, but will probably not have a sexual deviation. Here the focus will be on indecent exposure and contact sexual offences against adults and children.

Types of sexual offences and offenders

The range of officially recognized sexual offences is set out in Box 17.3. Legal classifications change and a legal label says little about the nature of the actual incident. Various typologies (based on the nature of the act, the motivation of the offender, the characteristics of the offender, and the characteristics of the victim) lack validity, reliability, and practical utility.

Indecent exposure The most common sexual offence. Classification:

  • Exhibitionists Inhibited men, often previous unremarkable character, with sudden powerful urge to display genitals, who make little attempt to avoid capture and who make no further erotic or obscene gestures/ attempt any contact with victim.
  • Disinhibited—by alcohol, stress, or psychiatric disorder.
  • Aggressive, impulsive, and antisocial—a small minority.

·         Most do not reoffend. A small number may progress to more serious sexual offences. Rates of further indecent exposure: first-time offenders—20%, previous sexual offences—60%, previous sexual and non-sexual offences—70%.

 

Rape and other sexual assaults on adults 

Usually perpetrated by men against women and, less often, other men. Female perpetrators uncommon. Typologies lack validity, but may be classified as: aggressive, sexual, or sadistic. Most rapists are young males from poor social and educational backgrounds who have a history of other offending. A small number of these offenders are sexual sadists. Sadistic fantasy is common in men, but sadistic sexual offending is rare—features which may be associated with acting out sadistic fantasies are social isolation, coexisting other paraphilias, lack of empathy, disinhibition (by alcohol, drugs, stress, or psychiatric disorder). 15% of rapists reoffend sexually and 20% go on to commit non-sexual violent offences.

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Rape and other sexual assaults on children

Female children are victimized more than males.

·         Intra-familial abuse (incest) is usually perpetrated by fathers or stepfathers against daughters. Family pathology (dysfunctional families with generational blurring) often mixed with pathology in the perpetrator (alcohol misuse, personality disorder, paedophilia—but only in a minority).

·         Extra-familial abuse is less common. Adolescent offending is associated with poor social skills, physical unattractiveness, and isolation from peers. Adult offenders are more likely to have paedophilic sexual fantasies than adolescent offenders and intra-familial offenders. In some cases offending against children reflects general antisocial tendencies or the expression of repressed paedophilic impulses in susceptible men disinhibited (by alcohol, stress, or psychiatric disorder). Many offenders become skilled at targeting and grooming victims to gain their trust. A very rare minority have sadistic paedophilic fantasies. Cases of sexually motivated killing of children are extremely rare.

Rates of sexual offences 

Rates of recorded sexual offences are shown on b p. 685. Many sexual offences are not reported.

Rates of sexual reoffending

Extra-familial child offenders > offenders against adults > incest offenders.

Internet offences

A growing concern over the last two decades has been the role of the Internet in providing a method of distribution of obscene and/or unlawful sexual material (particularly images of children). The fast rate of technological developments and the global reach of the Internet, crossing legal jurisdictions, has left the police and legal authorities in many countries struggling to keep pace and the law in this area is still developing. The recently adopted Section 63 of the Criminal Justice and Immigration Act 2008 (in England and Wales) and Section 42 of the Criminal Justice and Licensing (Scotland) Act 2010 (in Scotland) criminalize possession of what it refers to as ‘extreme pornographic images’.

Characteristics of sex offenders 

A heterogeneous group—possible relevant factors: deviant sexual fantasy, sexual dysfunction, abnormal personality (impulsivity, lack of empathy, inhibition, social anxiety), relationship difficulties (poor social skills, social isolation), alcohol or drug misuse, denial and minimization of offending, cognitive distortions (regarding sex, women, or children), problems with assertiveness and control of anger, previous histories of victimization.

Mental disorder and sex offending            

The most common mental disorders found in sex offenders: personality disorder, paraphilias, alcohol and substance misuse; severe mental illness is rare. Sex offenders with psychosis share many of the features of other sex offenders and offending is rarely due to specific psychotic symptoms. Disinhibition due to mania or organic disorders may lead to, usually minor, sexual offences. Most sex offences committed by people with LD are associated with lack of sexual knowledge, poor social skills, and inability to express a normal sex drive appropriately. A few more serious and persistent LD offenders may share characteristics of other sex offenders.

Assessment of sex offenders

Full psychiatric history and MSE— emphasis on the nature of the incident(s), psychosexual history, and previous offences, utilizing sources of information other than the accused. It may be difficult to build up a full picture of a person’s sexual fantasies and activities. Some centres (mainly in North America) use penile plethysmography (measuring the extent of penile erection in response to various stimuli).

Risk assessment

Consider the following factors: sexual deviation; personality disorder; mental illness; substance misuse; relationship problems; employment problems; previous offences (sexual and non-sexual); previous supervision failure; frequency, types, and escalation in sexual offending; physical harm to victims and use of weapons; denial/minimization and cognitive distortions; future plans and attitudes towards intervention.

Management of sex offenders

Some mentally disordered offenders require treatment in hospital (esp. those with mental illness or marked LD). In psychotic sex offenders it is usually important to address factors common to other sex offenders. Those with personality disorders, paraphilias, and substance misuse are normally dealt with by the criminal justice system. Within the criminal justice system, both in prison and the community, group CBT programmes have been developed. A small number of sex offenders receive psychodynamic treatment at specialist clinics. Medications such as anti-androgens, anti-gonadotrophins, and SSRIs may be used in a few offenders.

Stalking

Essence 

A constellation of behaviours in which an individual inflicts on another repeated, unwanted intrusions and communications. Common stalking behaviours include: following, loitering nearby, maintaining surveillance, and making approaches and communications in any modality, most commonly phone calls. Stalking behaviour can arise as a result of an attempt to establish, re-establish, or impose a relationship on another who has either made clear their disinterest, or has not been consulted on the matter, or to retaliate for some perceived injustice.

History

Stalking is not a new phenomenon, but the naming of this course of conduct, coupled with legal, public, and scientific interest in it is. The first state to specifically criminalize stalking was California in 1990, following a series of high-profile stalking cases. It was first made a specific criminal offence in the UK by the Protection from Harassment Act 1997. This made it an offence to pursue a course of conduct which amounts to harassment of another on two or more occasions.

Stalker typology

·         Rejected stalkers 

Pursue victims in order to reverse, correct, or avenge rejection (e.g. divorce, separation, termination of relationship).

·         Resentful stalkers

Pursue a vendetta because of a sense of grievance against the victims. Motivated by the desire to frighten and distress.

·         Incompetent suitors

Despite poor social or courting skills, have a fixation on, or in some cases a sense of entitlement to, an intimate relationship with those who have attracted their amorous interest.

·         Predatory stalkers Initially spy on victim as a precursor to a sexual assault. However, stalking can be sustained in this group due to stalker taking pleasure in voyeurism and fantasy about the coming attack.

·         Erotomaniac stalkers Have the delusional belief that another person, usually of higher social status, is secretly in love with them. The sufferer may also believe that the subject of their delusion secretly communicates their love through seemingly innocuous acts, or if they are a public figure through clues in the media. The object of the delusion usually has little or no contact with the sufferer, who often believes the object initiated the fictional relationship. Erotomaniac delusions are typically found as the primary symptom of a delusional disorder, and in schizophrenia or mania.

·         Effects of stalking on victims Stalking can have devastating consequences for both the victim and stalker. Victims of stalking can develop depression, PTSD-like symptoms, anxiety disorders/phobias, and substance misuse problems.

·         Stalking of health professionals Health professionals (especially mental health professionals) are at increased risk of being stalked compared to the general public. One study found that 53% of staff in an inpatient psychiatric unit had experienced some form of stalkingharassment during their careers. Another which looked at the frequency of various diagnoses in patients who were stalking mental health staff found that 45% had a psychotic disorder, 11% had a mood disorder, and 37% had a personality disorder.

·         Stalking risk assessment Usually performed by a forensic psychiatrist or psychologist, a risk assessment tool such as the Stalking Assessment and Management (SAM) tool, can be used to stratify stalkers into groups depending on the level of risk of harm they pose. Various factors have been found to increase the risk of harm arising, e.g. substance misuse problems, previous criminality, persistence. The aim is to formulate a management plan to target risk factors to reduce risk.

 

What to do if you are being stalked

·  Inform others (family, friends, neighbours, work, police) what is happening, as stalkers will use embarrassed secrecy on the part of the victim to further their stalking aims.

·  Protect personal information (e.g. social networking sites, household rubbish).

·  Use an answering machine (enables recording of stalker’s calls).

·  Retain all evidence of stalking.

·  Contact the police early, and keep contacting them whenever further incidents occur, and provide them with any evidence of the stalking.

·  Obtain a restraining order which, if breached, will result in the incarceration of the stalker.

 

Other offences

·         Arson Arson (fire-setting in Scotland) is considered to be a serious offence due to its potential to threaten life and cause massive destruction. Only a small proportion (less than 20%) of arson offences lead to prosecution.  As with sex offenders and other offenders, typologies are fraught with problems. The following groups have been described (but they are not mutually exclusive): insurance fraud, covering evidence of crime, politically motivated, gang activity, revenge/anger, cry for help, desire for power, desire to be hero, fascination with fire, sexual excitement, suicide, psychiatric disorder.

 

Psychiatric disorder Alcohol/substance misuse and personality disorder are the most frequent; less common are psychosis, organic disorders, and learning disability (a previously highlighted association due to studies of patients in secure hospitals). Pure ‘pyromania’ is rare—features are usually seen in individuals with personality disorders.

 

Assessment Full psychiatric assessment with detailed examination of current and previous offences.

 

Management Treatment of mental disorder if present; specific psychological interventions have been proposed but little evidence; important to take steps to prevent access to matches and lighters if ongoing risk in hospital setting.

 

Outcome Rates of further arson 2–20%, rates of any reoffending 10–30%. No specific indicators of risk.

 

Other damage to property

Acts of vandalism are common, especially in adolescence. There is little psychiatric literature on criminal damage excluding arson.

·         Crimes of dishonesty

Burglarytheft, and fraud are common offences which are rarely asso ciated with psychiatric disorder. Shoplifting has attracted some clinical attention. About 5% of shoplifters suffer from significant mental disor-der (personality disorder, substance misuse, depression, schizophrenia, dementia). Pure kleptomania is extremely rare (see b p. 408).

·         Drug offences

Mental disorder rarely an issue (with the obvious exception of substance misuse/dependence and associated conditions).

·         Car crime

Impaired ability to drive may be caused by a number of disorders (see b p. 902). Occasional rare cases of people disinhibited by mania or impaired by dementia who cause serious injury or death. However, mental disorder is rarely an issue in car crime.

Mental disorder and offending

What is the relationship between mental disorder and offending?

Mental disorder is common and offending is common, so it would not be surprising to find an individual with both. But is the relationship more than coincidental? When looking at studies of this relationship one needs to consider:

·  The nature of the sample studied (community vs. institutional; clinical vs. epidemiological; pre-treatment vs. post-treatment; offenders vs. non-offenders).

·  The criteria used to define mental disorder (legal vs. clinical vs. operationalized) and the method used to determine its existence (case notes vs. interviews; clinically trained vs. lay interviewers).

·  The criteria used to define offending (types of officially recorded offences included; inclusion of unreported or unprosecuted ‘offences’) and the method used to detect offences (official records vs. self-report vs. third-party report).

Most of the research has focused on violence. The following are the main conclusions to be drawn from current evidence.

·  People with mental disorder as a broad group are no more or less likely to offend than the general population.

·  Some specific mental disorders do increase the risk of a person acting violently, particularly alcoholand drug-related disorders and personality disorders (especially those with predominant cluster B characteristics).

·  Schizophrenia has a modest association with violence, but the overwhelming majority of people with schizophrenia are never violent, being more likely to be victims than perpetrators of violence.

·  In people with mental disorders the factors most strongly associated with offending are the same as for non-mentally disordered offenders: male gender, young age, substance misuse, disturbed childhood, socioeconomic deprivation.

·  When considering an offence perpetrated by a person with mental disorder, one should bear in mind that, as with any offence, there is interplay between the perpetrator, the victim, and the situational circumstances. Although mental disorder may play a part it is rarely the only factor that leads to an offence.

Schizophrenia

The lifetime risk of violence in people with schizophrenia is about 5 times that in the general population. People with schizophrenia account for less than 10% of all violent crime in Britain. The factors most commonly associated with violence in people with schizophrenia are those associated with violence in people without psychosis. Alcohol and drug misuse are particularly important. Specific symptoms may be important but clearly are not enough in themselves, otherwise virtually every person with schizophrenia would be violent. Threat control-override symptoms (delusions regarding being threatened or being controlled) have been found to be associated with violence, but again, most patients with these symptoms are never violent. The role of command auditory hallucinations is unclear. When people with psychosis are violent the victim is more likely to be known to them (particularly relatives) than when violence is committed by nonpsychotic individuals.

Delusional disorders

 

Delusional disorders are probably over-represented among patients detained in secure psychiatric hospitals; however, the research on the association between delusional disorders and violence is difficult to interpret as the samples are usually selective and uncontrolled, and in many studies patients with delusional disorders are lumped in with patients with other psychoses, especially schizophrenia. Increased risk of violence has been reported to be associated with persecutory delusions, misidentification delusions, delusions of jealousy, delusions of love, and querulous delusions. Jealousy may be dangerous whether it is delusionally based or not. In some cases it is difficult to differentiate between premorbid personality disorder (perhaps with paranoid and/or narcissistic features) and delusional disorder. The relevant beliefs are probably no less risky if they are over-valued ideas than if they are delusional.

Affective disorders

Affective disorders have a far less strong relationship with offending and violence than schizophrenia. Mania commonly leads to minor offending due to grandiosity and disinhibition, but rarely leads to serious violence or sexual assaults. Depression is very rarely associated with violence or offending. Extended suicide (also known as altruistic homicide), in which a depressed parent (usually the father) kills members of their family before attempting and perhaps succeeding in killing themselves, is extremely rare and impossible to predict. In some cases it occurs in depressive psychosis associated with nihilistic delusions, but more commonly there is a history of marital breakdown in people who are depressed and suicidal but not psychotic. A historical association between shoplifting and depression has been highlighted, but is probably insignificant.

 

Alcoholand drug-related disorders

Alcoholand drug-related problems are more strongly linked to offending and violence than any other mental disorders. A number of aspects of alcohol and substance misuse may be relevant: direct effects of intoxication or withdrawal; funding the habit; the personal and social consequences of dependence; the neuropsychiatric sequel of prolonged misuse; the social context (peer group, socio-economic deprivation, childhood mistreatment), and personal characteristics (impulsivity and sensation seeking), which may lead to substance misuse, may also be associated with offending.

Personality disorders

Personality disorder is more strongly related to offending and violence than mental illness. Personality disordered offenders are heterogeneous: only a small number are psychopathic (see b p. 496). Various aspects of personality disorder may be related to offending: impulsivity, lack of empathy, poor affect regulation, paranoid thinking, poor relationships with others, problems with anger and assertiveness.

Learning disability

Offending occurs more often in people with milder forms of learning disability than in those with severe learning disability. Offences are broadly similar to those in non-learning disabled offenders and are associated with family and social disadvantage. Evidence for increased rates of sex offending and fire-raising is based on highly selected patient samples in secure hospitals and is therefore questionable. In some learning disabled offenders poor social development, poor educational achievement, gullibility, and impaired ability to communicate may be important factors. Profound and severe learning disability may be associated with disturbed behaviour, including aggression, but would rarely come to the attention of the criminal justice system.

Organic disorders

Aggression is well recognized in dementia, but rarely leads to serious violence. Delirium and brain injury may lead to aggression. In head injury cases it may be difficult to differentiate the effects of the head injury from premorbid personality. Epilepsy is twice as common in offenders as in the general population, but this is probably due to shared environmental and biological disadvantages that predispose individuals to both. Violence resulting from epileptic activity is extremely rare.

 


Last Updated: 11 Dec 2024