Intermittent explosive disorder (abbreviated IED) is a behavioral disorder characterized by extreme expressions of anger, often to the point of uncontrollable rage, that are disproportionate to the situation at hand. It is currently categorized in the Diagnostic and Statistical Manual of Mental Disorders as an impulse control disorder. IED belongs to the larger family of Axis I impulse control disorders listed in the DSM-IV-TR, along with kleptomania, pyromania, pathological gambling, and others. Impulsive aggression is unpremeditated, and is defined by a disproportionate reaction to any provocation, real or perceived. Some individuals have reported affective changes prior to an outburst (e.g.,tension, mood changes, energy changes, etc.).Learn More
Problem gambling (ludomania) is an urge to gamble despite harmful negative consequences or a desire to stop. Problem gambling often is defined by whether harm is experienced by the gambler or others, rather than by the gambler’s behavior. Severe problem gambling may be diagnosed as clinical pathological gambling if the gambler meets certain criteria. Although the term gambling addiction is common in the recovery movement pathological gambling is considered to be an impulse control disorder and is therefore not considered by the American Psychological Association to be an addiction.Learn More
Pyromania in more extreme circumstances can be an impulse control disorder to deliberately start fires to relieve tension or for gratification or relief. Pyromania and pyromaniacs are distinct from arson and arsonists, whose motivations stem from psychosis, the pursuit of personal, monetary or political gain, or the intent to inflict harm for advantage or revenue. Pyromaniacs start fires to induce euphoria, and often fixate on institutions of fire control like fire stations and firefighters. Pyromania is a type of impulse control disorder.Learn More
Trichotillomania is the compulsive urge to pull out one’s own hair leading to noticeable hair loss, distress, and social or functional impairment. It is often chronic and difficult to treat.
Trichotillomania may be present in infants, but the peak age of onset is 9 to 13. It may be triggered by depression or stress. Due to social implications the disorder is often unreported and it is difficult to accurately predict its prevalence; the lifetime prevalence is estimated to be between 0.6% (overall) and may be as high as 1.5% (in males) to 3.4% (in females).
The name, coined by French dermatologist François Henri Hallopeau, derives from the Greek: trich- (hair), till(en) (to pull), and mania (“an abnormal love for a specific object, place, or action”).Learn More
Dyssomnias are a broad classification of sleeping disorders that make it difficult to get to sleep, or to remain sleeping.
Dyssomnias are primary disorders of initiating or maintaining sleep or of excessive sleepiness and are characterized by a disturbance in the amount, quality, or timing of sleep.
Patients may complain of difficulty getting to sleep or staying asleep, intermittent wakefulness during the night, early morning awakening, or combinations of any of these. Transient episodes are usually of little significance. Stress, caffeine, physical discomfort, daytime napping, and early bedtimes are common factors.
Disorders in this Category
Parasomnias are a category of sleep disorders that involve abnormal and unnatural movements, behaviors, emotions, perceptions, and dreams that occur while falling asleep, sleeping, between sleep stages, or during arousal from sleep. Most parasomnias are dissociated sleep states which are partial arousals during the transitions between wakefulness and NREM sleep, or wakefulness and REM sleep.
Exhibitionism refers to exposing bare female breasts and/or buttocks of either a male or female. When genitalia is exposed the behavior is more commonly described as indecent exposure. Exhibitionism is an overall psychosocial concept that, when applied to physical actions, denotes two separate phenomena.
The first, colloquially referred to as flashing, involves the exposure of a person’s “private parts” to another person, in a nonthreatening manner, in a situation where these would not normally be exposed, such as in a social situation (in front of other people) or in a public place. The act of flashing, particularly when done by females involving the breasts but also when involving her vagina and also her buttocks, may be at least partially sexual in intention, i.e. to prompt the sexual arousal of those being flashed (in turn giving the flasher an ego boost). However, flashing may also simply be intended to attract the non-aroused ‘attention’ of another or others, or for shock value.
The second, indecent exposure, involves the same sorts of exposure done in a threatening manner or in a manner perceived by those being exposed-to as threatening. Indecent exposure, when it is assessed to be this, is sometimes prosecuted under laws designed to criminalise it, such as public nuisance laws and indecent-exposure laws. Such laws vary by locality worldwide, including within different parts of the United States.
There is somewhat of a double standard here as concerns the two different types of exhibitionism, since “indecent exposure” has a tendency in the Western world to be equated with a male exposing his genitalia to a female, when such acts are perceived by the female as threatening, while at the same time a female exposing her breasts (“flashing”) to male or female viewers is almost always seen as nonthreatening and in fact is often even requested to occur by those wanting to see bare breasts, such as the non-parade-related celebrations surrounding Mardi Gras and other similar festivals.
Exhibitionism is not automatically a compulsion, but some people do have a distinct psychological tendency to sexually expose themselves, whether it is to “flash” (the nonthreatening form) or to “indecently expose” (the threatening form). When it is a compulsion, it is a condition sometimes called apodysophilia.Learn More
Frotteurism refers to a paraphilic interest in rubbing, usually one’s pelvis or erect penis, against a non-consenting person for sexual gratification. It may involve touching any part of the body including the genital area. A person who practices frotteurism is known as a frotteur. The majority of frotteurs are male and the majority of victims are female, although female on male, female on female, and male on male frotteurs exist. Adult on child frotteurism can be an early stage in child sexual abuse. This activity is often done in circumstances where the victim cannot easily respond, in a public place such as a crowded train or concert.
Usually, such nonconsensual sexual contact is viewed as a criminal offense: a form of sexual assault albeit often classified as a misdemeanor with minor legal penalties. Conviction may result in a sentence or psychiatric treatment.Learn More
As a medical diagnosis, pedophilia (or paedophilia) is defined as a psychiatric disorder in adults or late adolescents (persons age 16 or older) typically characterized by a primary or exclusive sexual interest in prepubescent children (generally age 13 years or younger, though onset of puberty may vary). The child must be at least five years younger in the case of adolescent pedophiles (16 or older) to be termed pedophilia. The term has a range of definitions, as found in psychiatry, psychology, the vernacular, and law enforcement.
The International Classification of Diseases (ICD) defines pedophilia as a “disorder of adult personality and behaviour” in which there is a sexual preference for children of prepubertal or early pubertal age. According to the Diagnostic and Statistical Manual of Mental Disorders(DSM), pedophilia is a paraphilia in which a person has intense and recurrent sexual urges towards and fantasies about prepubescent children and on which feelings they have either acted or which cause distress or interpersonal difficulty. The current DSM-5 draft proposes to add hebephilia to the diagnostic criteria, and consequently to rename it to pedohebephilic disorder.
In popular usage, pedophilia means any sexual interest in children or the act of child sexual abuse, often termed “pedophilic behavior.” For example, The American Heritage Stedman’s Medical Dictionary states, “Pedophilia is the act or fantasy on the part of an adult of engaging in sexual activity with a child or children.” This common use application also extends to the sexual interest in and abuse of pubescent or post-pubescent minors. Researchers recommend that these imprecise uses be avoided; people who commit child sexual abuse commonly exhibit the disorder, but some offenders do not meet the clinical diagnosis standards for pedophilia, which only pertain to prepubescents. Additionally, not all pedophiles actually commit such abuse.
Pedophilia was first formally recognized and named in the late 19th century. A significant amount of research in the area has taken place since the 1980s. Although mostly documented in men, there are also women who exhibit the disorder, and researchers assume available estimates underrepresent the true number of female pedophiles. No cure for pedophilia has been developed, but there are therapies that can reduce the incidence of a person committing child sexual abuse. In the United States, following Kansas v. Hendricks, sex offenders that are diagnosed with certain mental disorders, particularly pedophilia, can be subject to indefinite civil commitment, under various state laws (generically called SVP laws) and the federal Adam Walsh Child Protection and Safety Act of 2006. At present, the exact causes of pedophilia have not been conclusively established. Research suggests that pedophilia may be correlated with several different neurological abnormalities, and often co-exists with other personality disorders and psychological pathologies. In the contexts of forensic psychology and law enforcement, a variety of typologies have been suggested to categorize pedophiles according to behavior and motivations.Learn More
Sadomasochism broadly refers to the receiving of pleasure—often sexual—from acts involving the infliction or reception of pain or humiliation. The name originates from two authors on the subject, Marquis de Sade and Leopold von Sacher-Masoch. A subset of BDSM, practitioners of sadomasochism usually seek out sexual gratification from these acts, but often seek out other forms of pleasure as well. While the terms sadist and masochist specifically refer to one who either enjoys giving pain (sadist), or one who enjoys receiving pain (masochist), many practitioners of sadomasochism describe themselves as at least somewhat of a switch, or someone who can receive pleasure from either inflicting or receiving pain.
The acronym S&M is often used for sadomasochism, although practitioners themselves normally drop the & and use the acronym SM or S/M. Sadomasochism should be differentiated from the clinical paraphilias which require that such practices lead to clinically significant distress or impairment for a diagnosis. Similarly, sexual sadism within the context of mutual consent should not be mistaken for acts of sexual violence or aggression.
The combination of sadism and masochism, in particular the deriving of pleasure, especially sexual gratification, from inflicting or submitting to physical or emotional abuse. 1. (Psychology) the combination of sadistic and masochistic elements in one person, characterized by both aggressive and submissive periods in relationships with others 2. sexual practice in which one partner adopts a sadistic role and the other a masochistic one Abbreviation SM Compare sadism, masochismLearn More
Transvestic fetishism is having a sexual or erotic interest in cross-dressing. It differs from cross-dressing for entertainment or other purposes that do not involve sexual arousal and is categorized as a paraphilia in the Diagnostic and Statistical Manual of the American Psychiatric Association. (Sexual arousal in response to donning sex-typical clothing is homeovestism.)
Transvestic fetishism refers specifically to cross-dressing; sexual arousal in response to individual garments is fetishism. Occurrence of transvestic fetishism is uncorrelated to occurrence of gender identity disorder. Most men who have transvestic fetishism do not have a problem with their assigned sex.
Some male transvestic fetishists collect women’s clothing, e.g. nightgowns, babydolls, slips, brassieres, and other types of nightwear,lingerie, stockings, pantyhose, shoes, and boots, items of a distinct feminine look and feel. They may dress in these feminine garments and take photographs of themselves while living out their secret fantasies. According to the DSM-IV, this fetishism has been described only in men.
There are two key criteria before a psychiatric diagnosis of “transvestic fetishism” is made:
- Recurrent, intense sexually arousing fantasies, urges, or behaviour, involving cross-dressing.
- This causes clinically significant distress or impairment, whether socially, at work, or elsewhere.
Thus, transvestic fetishism is not diagnosed unless it causes significant problems for the person concerned.Learn More
A night terror, also known as a sleep terror or pavor nocturnus, is a parasomnia disorder that predominantly affects children, causing feelings of terror or dread. Night terrors should not be confused with nightmares, which are bad dreams that cause the feeling of horror or fear. An estimated 1-6% of children have at least one night terror in their life but have no memory of the occurrence.
Children from age two to six are most prone to night terrors. They affect about fifteen percent of all children, although people of any age can be affected. Episodes may happen for a couple of weeks then suddenly disappear. The symptoms also tend to be different, with the child being unable to recall the experience. While nearly arisen, hallucinations occur.
Children who have night terrors are usually described as ‘bolting upright’ with their eyes wide open, and a look of fear and panic. They will often scream. Further, they will usually sweat, breathe fast and have a rapid heart rate (autonomic signs). Although it seems like children are awake during a night terror, they will appear confused, be inconsolable, and will not recognize others.
Strong evidence has shown that a predisposition to night terrors and other parasomniac disorders can be passed genetically. Though there are a multitude of triggers, emotional stress during the previous day and a high fever are thought to precipitate most episodes. Ensuring the right amount of sleep is an important factor. Special consideration must be used when the subject suffers from narcolepsy, as there may be a link.
Though the symptoms of night terrors in adolescents and adults are similar, the etiology, prognosis and treatment are qualitatively different. These night terrors can occur each night if the sufferer does not eat a proper diet, get the appropriate amount or quality of sleep (e.g. sleep apnea), is enduring stressful events in their life or if they remain untreated. Adult night terrors are much less common, and often respond to treatments to rectify causes of poor quality or quantity of sleep. There is no scientific evidence of a link between night terrors and mental illness. There is some evidence of a link between adult night terrors and hypoglycemia. In addition to night terrors, some adult night terror sufferers have many of the characteristics of depressed individuals including inhibition of aggression, self-directed anger, passivity, anxiety, impaired memory, and the ability to ignore pain. When a night terror happens it is typical that person can wake themself up screaming, kicking, and often can not make out what they are saying. Often the person can even run out of the house (more common among adults) which can then lead to violent actions.Learn More
Delusional disorder is an uncommon psychiatric condition in which patients present with circumscribed symptoms of non-bizarre delusions, but with the absence of prominent hallucinations and no thought disorder, mood disorder, or significant flattening of affect. For the diagnosis to be made, auditory and visual hallucinations cannot be prominent, though olfactory or tactile hallucinations related to the content of the delusion may be present.
To be diagnosed with delusional disorder, the delusion or delusions cannot be due to the effects of a drug, medication, or general medical condition, and delusional disorder cannot be diagnosed in an individual previously diagnosed with schizophrenia. A person with delusional disorder may be high functioning in daily life and may not exhibit odd or bizarre behavior aside from these delusions. The Diagnostic and Statistical Manual of Mental Disorders (DSM) defines six subtypes of the disorder characterized as erotomanic (believes that someone famous is in love with him/her), grandiose (believes that he/she is the greatest, strongest, fastest, most intelligent person ever), jealous (believes that the love partner is cheating on him/her), persecutory (believes that someone is following him/her to do some harm in some way), somatic (believes that he/she has a disease or medical condition), and mixed, i.e., having features of more than one subtypes. Delusions also occur as symptoms of many other mental disorders, especially the other psychotic disorders.
The DSM-IV, and psychologists, generally agree that personal beliefs should be evaluated with great respect to complexity of cultural and religious differences since some cultures have widely accepted beliefs that may be considered delusional in other cultures.Learn More
Schizophreniform disorder is a mental disorder diagnosed when symptoms of schizophrenia are present for a significant portion of the time within a one-month period, but signs of disruption are not present for the full six months required for the diagnosis of schizophrenia.
The symptoms of both disorders can include delusions, hallucinations, disorganized speech, disorganized or catatonic behavior, and social withdrawal. While impairment in social, occupational, or academic functioning is required for the diagnosis of schizophrenia, in schizophreniform disorder an individual’s level of functioning may or may not be affected. While the onset of schizophrenia is often gradual over a number of months or years, the onset of schizophreniform disorder can be relatively rapid.
Like schizophrenia, schizophreniform disorder is often treated with antipsychotic medications, especially the atypicals, along with a variety of social supports (such as individual psychotherapy, family therapy, occupational therapy, etc.) designed to reduce the social and emotional impact of the illness. The prognosis varies depending upon the nature, severity, and duration of the symptoms, but about two-thirds of individuals diagnosed with schizophreniform disorder go on to develop schizophrenia.
Schizophreniform disorder is a type of mental illness that is characterized by psychosis and closely related to schizophrenia. Both schizophrenia and schizophreniform disorder, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), have the same symptoms and essential features except for two differences: the level of functional impairment and the duration of symptoms. Impairment in social, occupational, or academic functioning is always present in schizophrenia, but such impairment may or may not be present in schizopheniform disorder. In schizophreniform disorder, the symptoms (including prodromal, active, and residual phases) must last at least 1 month but not more than 6 months, while in schizophrenia the symptoms must be present for a minimum of 6 months.
If the symptoms have persisted for at least one month, a provisional diagnosis of schizophreniform disorder can be made while waiting to see if recovery occurs. If the symptoms resolve within 6 months of onset, the provisional qualifier is removed from the diagnosis. However, if the symptoms persist for 6 months or more, the diagnosis of schizophreniform disorder must be revised. The diagnosis of brief psychotic disorder may be considered when the duration of symptoms is less than one month.
The main symptoms of both schizophreniform disorder and schizophrenia can include:
- disorganized speech resulting from formal thought disorder,
- disorganized or catatonic behavior, and negative symptoms, such as
- an inability to show emotion (flat affect),
- an inability to experience pleasure (anhedonia),
- impaired or decreased speech (aphasia),
- a lack of desire to form relationships (asociality), and
- a lack of motivation (avolition).
Folie à deux is a psychiatric syndrome in which symptoms of a delusional belief are projected from one individual to another. The same syndrome shared by more than two people may be called folie à trois, folie à quatre, folie en famille or even folie à plusieurs (“madness of many”). Recent psychiatric classifications refer to the syndrome as shared psychotic disorder (DSM-IV) (297.3) and induced delusional disorder (F.24) in the ICD-10, although the research literature largely uses the original name. The disorder was first conceptualized in 19th century French psychiatry.
This case study is taken from Enoch and Ball’s ‘Uncommon Psychiatric Syndromes’ (2001, p181): Margaret and her husband Michael, both aged 34 years, were discovered to be suffering from folie à deux when they were both found to be sharing similar persecutory delusions. They believed that certain persons were entering their house, spreading dust and fluff and “wearing down their shoes”. Both had, in addition, other symptoms supporting a diagnosis of emotional contagion, which could be made independently in either case.
This syndrome is most commonly diagnosed when the two or more individuals concerned live in proximity and may be socially or physically isolated and have little interaction with other people.
Various sub-classifications of folie à deux have been proposed to describe how the delusional belief comes to be held by more than one person.
- Folie imposée is where a dominant person (known as the ‘primary’, ‘inducer’ or ‘principal’) initially forms a delusional belief during a psychotic episode and imposes it on another person or persons (known as the ‘secondary’, ‘acceptor’ or ‘associate’) with the assumption that the secondary person might not have become deluded if left to his or her own devices. If the parties are admitted to hospital separately, then the delusions in the person with the induced beliefs usually resolve without the need of medication.
- Folie simultanée describes either the situation where two people considered to suffer independently from psychosis influence the content of each other’s delusions so they become identical or strikingly similar, or one in which two people “morbidly predisposed” to delusional psychosis mutually trigger symptoms in each other.
Female sexual arousal disorder (FSAD), commonly referred to as frigidity, is a disorder characterized by a persistent or recurrent inability to attain sexual arousal or to maintain arousal until the completion of a sexual activity, or an adequate lubrication-swelling response that otherwise is present during arousal and sexual activity. The condition should be distinguished from a general loss of interest in sexual activity and from other sexual dysfunctions, such as the orgasmic disorder (anorgasmia) and hypoactive sexual desire disorder, which is characterized as a lack or absence of sexual fantasies and desire for sexual activity for some period of time.
Although female sexual dysfunction is currently a contested diagnostic, pharmaceutical companies are beginning to promote products to treat FSD, often involving low doses of testosterone.Learn More
Gender identity disorder (GID) is the formal diagnosis used by psychologists and physicians to describe persons who experience significant gender dysphoria (discontent with their biological sex and/or the gender they were assigned at birth). It describes the symptoms related to transsexualism, as well as less severe manifestations of gender dysphoria.
Gender identity disorder in children is usually reported as “having always been there” since childhood, and is considered clinically distinct from GID that appears in adolescence or adulthood, which has been reported by some as intensifying over time. As gender identity develops in children, so do sex-role stereotypes. Sex-role stereotypes are the beliefs, characteristics and behaviors of individual cultures that are deemed normal and appropriate for boys and girls to possess. These “norms” are influenced by family and friends, the mass-media, community and other socializing agents. Since many cultures strongly disapprove of cross-gender behavior, it often results in significant problems for affected persons and those in close relationships with them. In many cases, transgendered individuals report discomfort stemming from the feeling that their bodies are “wrong” or meant to be different.
Many transgendered people and researchers support the declassification of GID as a mental disorder for several reasons. Recent medical research on the brain structures of transgendered individuals have shown that some transgendered individuals have the physical brain structures that resemble their desired sex even before hormone treatment. In addition, recent studies are indicating more possible causes for gender dysphoria, stemming from genetic reasons and prenatal exposure to hormones, as well as other psychological and behavioral reasons.
One contemporary treatment for this disorder consists primarily of physical modifications to bring the body into harmony with one’s perception of mental (psychological, emotional) gender identity, rather than vice versa.Learn More
Hypoactive sexual desire disorder (HSDD), is considered as a sexual dysfunction and is characterized as a lack or absence of sexual fantasies and desire for sexual activity for some period of time. For this to be regarded as a disorder, it must cause marked distress or interpersonal difficulties and not be better accounted for by another mental disorder, a drug (legal or illegal), or some other medical condition.
HSDD is listed under the Sexual and Gender Identity Disorders of the DSM-IV. It was first included in the DSM-III under the name Inhibited Sexual Desire Disorder, but the name was changed in the DSM-III-R.
There are various subtypes. HSDD can be general (general lack of sexual desire) or situational (still has sexual desire, but lacks sexual desire for current partner), and it can be acquired (HSDD started after a period of normal sexual functioning) or life-long (the person has always had no/low sexual desire.)Learn More
Erectile dysfunction (ED, “male impotence”) is sexual dysfunction characterized by the inability to develop or maintain an erection of thepenis during sexual performance.
A penile erection is the hydraulic effect of blood entering and being retained in sponge-like bodies within the penis. The process is often initiated as a result of sexual arousal, when signals are transmitted from the brain to nerves in the penis. Erectile dysfunction is indicated when an erection is difficult to produce. There are various circulatory causes, including alteration of the voltage-gated potassium channel, as in arsenic poisoning from drinking water. The most important organic causes are cardiovascular disease and diabetes, neurological problems (for example, trauma from prostatectomy surgery), hormonal insufficiencies (hypogonadism) and drug side effects.
Psychological impotence is where erection or penetration fails due to thoughts or feelings (psychological reasons) rather than physical impossibility; this is somewhat less frequent but often can be helped. Notably in psychological impotence, there is a strong response to placebo treatment. Erectile dysfunction, tied closely as it is about ideas of physical well being, can have severe psychological consequences.
Besides treating the underlying causes such as potassium deficiency or arsenic contamination of drinking water, the first line treatment of erectile dysfunction consists of a trial of PDE5 inhibitor drugs (the first of which was sildenafil or Viagra). In some cases, treatment can involve prostaglandin tablets in the urethra, injections into the penis, a penile prosthesis, a penis pump or vascular reconstructive surgery.Learn More
Anorgasmia is a type of sexual dysfunction in which a person cannot achieve orgasm, even with adequate stimulation. In males the condition is often related to delayed ejaculation. Anorgasmia can often cause sexual frustration. Anorgasmia is far more common in females than in males and is especially rare in younger men.
The condition is sometimes classified as a psychiatric disorder. However, it can also be caused by medical problems such as diabetic neuropathy, multiple sclerosis, genital mutilation, complications from genital surgery, pelvic trauma (such as from a straddle injury caused by falling on the bars of a climbing frame, bicycle or gymnastics beam), hormonal imbalances, total hysterectomy, spinal cord injury, cauda equina syndrome, uterine embolisation, childbirth trauma (vaginal tearing through the use of forceps or suction or a large or unclosedepisiotomy), vulvodynia and cardiovascular disease
A common cause of situational anorgasmia, in both men and women, is the use of anti-depressants, particularly selective serotonin reuptake inhibitors (SSRIs). Post-SSRI sexual dysfunction (PSSD) is a name given to a reported iatrogenic sexual dysfunction caused by the previous use of SSRI antidepressants. Though reporting of anorgasmia as a side effect of SSRIs is not precise, it is estimated that 15-50% of users of such medications are affected by this condition. The chemical amantadine has been shown to relieve SSRI-induced anorgasmia in some, but not all, people.Learn More