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Sexual dysfunction (or sexual malfunction or sexual disorder) is difficulty experienced by an individual or a couple during any stage of a normal sexual activity, including physical pleasure, desire, preference, arousal or orgasm. According to the DSM-5, sexual dysfunction requires a person to feel extreme distress and interpersonal strain for a minimum of 6 months (excluding substance or medication-induced sexual dysfunction). Sexual dysfunctions can have a profound impact on an individual's perceived quality of sexual life. The term sexual disorder may not only refer to physical sexual dysfunction, but to paraphilias as well; this is sometimes termed disorder of sexual preference.

A thorough sexual history and assessment of general health and other sexual problems (if any) are very important. Assessing performance anxiety, guilt, stress and worry are integral to the optimal management of sexual dysfunction. Many of the sexual dysfunctions that are defined are based on the human sexual response cycle, proposed by William H. Masters and Virginia E. Johnson, and then modified by Helen Singer Kaplan.

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Categories

Sexual dysfunction disorders may be classified into four categories: sexual desire disorders, arousal disorders, orgasm disorders and pain disorders.

Sexual desire disorders

Sexual desire disorders or decreased libido are characterized by a lack or absence for some period of time of sexual desire or libido for sexual activity or of sexual fantasies. The condition ranges from a general lack of sexual desire to a lack of sexual desire for the current partner. The condition may have started after a period of normal sexual functioning or the person may always have had no/low sexual desire.

The causes vary considerably, but include a possible decrease in the production of normal estrogen in women or testosterone in both men and women. Other causes may be aging, fatigue, pregnancy, medications (such as the SSRIs) or psychiatric conditions, such as depression and anxiety. While a number of causes for low sexual desire are often cited, only some of these have ever been the object of empirical research.

Sexual arousal disorders

Sexual arousal disorders were previously known as frigidity in women and impotence in men, though these have now been replaced with less judgmental terms. Impotence is now known as erectile dysfunction, and frigidity has been replaced with a number of terms describing specific problems that can be broken down into four categories as described by the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders: lack of desire, lack of arousal, pain during intercourse, and lack of orgasm.

For both men and women, these conditions can manifest themselves as an aversion to, and avoidance of, sexual contact with a partner. In men, there may be partial or complete failure to attain or maintain an erection, or a lack of sexual excitement and pleasure in sexual activity.

There may be medical causes to these disorders, such as decreased blood flow or lack of vaginal lubrication. Chronic disease can also contribute, as well as the nature of the relationship between the partners.

Erectile dysfunction

Erectile dysfunction or impotence is a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis. There are various underlying causes, such as damage to the nervi erigentes which prevents or delays erection, or diabetes as well as cardiovascular disease, which simply decreases blood flow to the tissue in the penis, many of which are medically reversible.

The causes of erectile dysfunction may be psychological or physical. Psychological erectile dysfunction can often be helped by almost anything that the patient believes in; there is a very strong placebo effect. Physical damage is much more severe. One leading physical cause of ED is continual or severe damage taken to the nervi erigentes. These nerves course beside the prostate arising from the sacral plexus and can be damaged in prostatic and colorectal surgeries.

Diseases are also common causes of erectile dysfunctional; especially in men. Diseases such as cardiovascular disease, multiple sclerosis, kidney failure, vascular disease and spinal cord injury are the source of erectile dysfunction.

Due to its embarrassing nature and the shame felt by sufferers, the subject was taboo for a long time, and is the subject of many urban legends. Folk remedies have long been advocated, with some being advertised widely since the 1930s. The introduction of perhaps the first pharmacologically effective remedy for impotence, sildenafil (trade name Viagra), in the 1990s caused a wave of public attention, propelled in part by the news-worthiness of stories about it and heavy advertising.

It is estimated that around 30 million men in the United States and 152 million men worldwide suffer from Erectile Dysfunction. However, social stigma, low health literacy and social taboos lead to under reporting which makes an accurate prevalence rate hard to determine.

The Latin term impotentia coeundi describes simple inability to insert the penis into the vagina. It is now mostly replaced by more precise terms.

Premature ejaculation

Premature ejaculation is when ejaculation occurs before the partner achieves orgasm, or a mutually satisfactory length of time has passed during intercourse. There is no correct length of time for intercourse to last, but generally, premature ejaculation is thought to occur when ejaculation occurs in under 2 minutes from the time of the insertion of the penis. For a diagnosis, the patient must have a chronic history of premature ejaculation, poor ejaculatory control, and the problem must cause feelings of dissatisfaction as well as distress the patient, the partner or both.

Historically attributed to psychological causes, new theories suggest that premature ejaculation may have an underlying neurobiological cause which may lead to rapid ejaculation.

Orgasm disorders

Orgasm disorders are persistent delays or absence of orgasm following a normal sexual excitement phase in at least 75 percent of sexual encounters. The disorder can have physical, psychological, or pharmacological origins. SSRI antidepressants are a common pharmaceutical culprit, as they can delay orgasm or eliminate it entirely. A common physiological culprit of anorgasmia is menopause, where one in three women report problems obtaining an orgasm during sexual stimulation following menopause.

Sexual pain disorders

Sexual pain disorders affect women almost exclusively and are also known as dyspareunia (painful intercourse) or vaginismus (an involuntary spasm of the muscles of the vaginal wall that interferes with intercourse).

Dyspareunia may be caused by insufficient lubrication (vaginal dryness) in women. Poor lubrication may result from insufficient excitement and stimulation, or from hormonal changes caused by menopause, pregnancy, or breast-feeding. Irritation from contraceptive creams and foams can also cause dryness, as can fear and anxiety about sex.

It is unclear exactly what causes vaginismus, but it is thought that past sexual trauma (such as rape or abuse) may play a role. Another female sexual pain disorder is called vulvodynia or vulvar vestibulitis. In this condition, women experience burning pain during sex which seems to be related to problems with the skin in the vulvar and vaginal areas. The cause is unknown.

Post-orgasmic diseases

Post-orgasmic diseases cause symptoms shortly after orgasm or ejaculation. Post-coital tristesse (PCT) is a feeling of melancholy and anxiety after sexual intercourse that lasts for up to two hours. Sexual headaches occur in the skull and neck during sexual activity, including masturbation or orgasm.

In men, postorgasmic illness syndrome (POIS) causes severe muscle pain throughout the body and other symptoms immediately following ejaculation. The symptoms last for up to a week. Some doctors speculate that the frequency of POIS "in the population may be greater than has been reported in the academic literature", and that many POIS sufferers are undiagnosed.

Dhat syndrome, another condition that occurs in men, is a culture-bound syndrome which causes anxious and dysphoric mood after sex.

Pelvic Floor Dysfunction

Pelvic floor dysfunction can be an underlying cause of sexual dysfunction in both women and men, and is treatable by physical therapy.

Uncommon sexual disorders in men

Erectile dysfunction from vascular disease is usually seen only amongst elderly individuals who have atherosclerosis. Vascular disease is common in individuals who have diabetes, peripheral vascular disease, hypertension and those who smoke. Any time blood flow to the penis is impaired, erectile dysfunction is the end result.

Hormone deficiency is a relatively rare cause of erectile dysfunction. In individuals with testicular failure like in Klinefelter syndrome, or those who have had radiation therapy, chemotherapy or childhood exposure to mumps virus, the testes may fail and not produce testosterone. Other hormonal causes of erectile failure include brain tumors, hyperthyroidism, hypothyroidism or disorders of the adrenal gland.

Structural abnormalities of the penis like Peyronie's disease can make sexual intercourse difficult. The disease is characterized by thick fibrous bands in the penis which leads to a deformed-looking penis.

Drugs are also a cause of erectile dysfunction. Individuals who take drugs to lower blood pressure, uses antipsychotics, antidepressants, sedatives, narcotics, antacids or alcohol can have problems with sexual function and loss of libido.

Priapism is a painful erection that occurs for several hours and occurs in the absence of sexual stimulation. This condition develops when blood gets trapped in the penis and is unable to drain out. If the condition is not promptly treated, it can lead to severe scarring and permanent loss of erectile function. The disorder occurs in young men and children. Individuals with sickle-cell disease and those who abuse certain medications can often develop this disorder.

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Causes

There are many factors which may result in a person experiencing a sexual dysfunction. These may result from emotional or physical causes. Emotional factors include interpersonal or psychological problems, which can be the result of depression, sexual fears or guilt, past sexual trauma, and sexual disorders, among others.

Sexual dysfunction is especially common among people who have anxiety disorders. Ordinary anxiousness can obviously cause erectile dysfunction in men without psychiatric problems, but clinically diagnosable disorders such as panic disorder commonly cause avoidance of intercourse and premature ejaculation. Pain during intercourse is often a comorbidity of anxiety disorders among women.

Physical factors that can lead to sexual dysfunctions include the use of drugs, such as alcohol, nicotine, narcotics, stimulants, antihypertensives, antihistamines, and some psychotherapeutic drugs. For women, almost any physiological change that affects the reproductive system--premenstrual syndrome, pregnancy and the postpartum period, menopause--can have an adverse effect on libido. Injuries to the back may also impact sexual activity, as can problems with an enlarged prostate gland, problems with blood supply, or nerve damage (as in sexual dysfunction after spinal cord injuries). Diseases such as diabetic neuropathy, multiple sclerosis, tumors, and, rarely, tertiary syphilis may also impact the activity, as could the failure of various organ systems (such as the heart and lungs), endocrine disorders (thyroid, pituitary, or adrenal gland problems), hormonal deficiencies (low testosterone, other androgens, or estrogen) and some birth defects.

Pelvic floor dysfunction is also a physical and underlying cause of many sexual dysfunctions.

In the context of heterosexual relationships, one of the main reasons for the decline in sexual activity among these couples is the male partner experiencing erectile dysfunction. This can be very distressing for the male partner, causing poor body image, and it can also be a major source of low desire for these men. In aging women, it is natural for the vagina to narrow and become atrophied. If a woman has not been participating in sexual activity regularly (in particular, activities involving vaginal penetration) with her partner, if she does decide to engage in penetrative intercourse, she will not be able to immediately accommodate a penis without risking pain or injury. This can turn into a vicious cycle, often leading to female sexual dysfunction.

According to Emily Wentzell, American culture has anti-aging sentiments that have caused sexual dysfunction to become "an illness that needs treatment" instead of viewing it as the natural part of the aging process it is. Not all cultures seek treatment; for example, a population of men living in Mexico often accept erectile dysfunction as a normal part of their maturing sexuality

Female sexual dysfunction

Several theories have looked at female sexual dysfunction, from medical to psychological perspectives. Three social psychological theories include: the self-perception theory, the overjustification hypothesis, and the insufficient justification hypothesis:

• Self-perception theory: people make attributions about their own attitudes, feelings, and behaviours by relying on their observations of external behaviours and the circumstances in which those behaviours occur
• Overjustification hypothesis: when an external reward is given to a person for performing an intrinsically rewarding activity, the person's intrinsic interest will decrease
• Insufficient justification: based on the classic cognitive dissonance theory (inconsistency between two cognitions or between a cognition and a behavior will create discomfort), this theory states that people will alter one of the cognitions or behaviours to restore consistency and reduce distress

The importance of how a woman perceives her behavior should not be underestimated. Many women perceived sex as a chore as opposed to a pleasurable experience, and they tend to consider themselves sexually inadequate, which in turn does not motivate them to engage in sexual activity. Several factors influence a women's perception of her sexual life. These can include: race, her gender, ethnicity, educational background, socioeconomic status, sexual orientation, financial resources, culture, and religion. Cultural differences are also present in how women view menopause and its impact on health, self-image, and sexuality. A study has found that African American women are the most optimistic about menopausal life; Caucasian women are the most anxious, Asian women are the most inhibited about their symptoms, and Hispanic women are the most stoic.

About one third of the women experienced sexual dysfunction, which may lead to women's loss of confidence in their sexual lives. Since these women had sexual problems, their sexual lives with their partners became a burden without pleasure, and eventually, they may completely lose interest in sexual activity. Some of the women found it hard to be aroused mentally; however, some had physical problems. Several factors can affect female dysfunction, such as situations in which women do not trust their sex partners. The environment where sex occurs is crucial, since being in an extremely public or extremely private place may make some women feel uncomfortable. Inability to concentrate on the sexual activity due to a bad mood or burdens from work may also cause a woman's sexual dysfunction. Other factors include physical discomfort or difficulty in achieving arousal, which could be caused by aging or changes in the body's condition.

Menopause

The female sexual response system is complex and even today, not fully understood. The most prevalent of female sexual dysfunctions that have been linked to menopause include lack of desire and libido; these are predominantly associated with hormonal physiology. Specifically, it is the decline in serum estrogens that causes these changes in sexual functioning. Androgen depletion may also play a role, but currently this is less clear. The hormonal changes that take place during the menopausal transition have been suggested to affect women's sexual response through several mechanisms, some more conclusive than others.

Aging in women

Whether or not aging directly affects women's sexual functioning during menopause is another area of controversy. However, many studies, including Hayes and Dennerstein's critical review, have demonstrated that aging has a powerful impact on sexual function and dysfunction in women, specifically in the areas of desire, sexual interest, and frequency of orgasm. In addition, Dennerstien and colleagues found that the primary predictor of sexual response throughout menopause is prior sexual functioning. This means that it is important to understand how the physiological changes in men and women can affect their sexual desire. Despite the seemingly negative impact that menopause can have on sexuality and sexual functioning, sexual confidence and well-being can improve with age and menopausal status. Furthermore, the impact that a relationship status can have on quality of life is often underestimated.

Testosterone, along with its metabolite dihydrotestosterone, is extremely important to normal sexual functioning in men and women. Dihydrotestosterone is the most prevalent androgen in both men and women. Testosterone levels in women at age 60 are, on average, about half of what they were before the women were 40. Although this decline is gradual for most women, those who've undergone bilateral oophorectomy experience a sudden drop in testosterone levels; this is because the ovaries produce 40% of the body's circulating testosterone.

Sexual desire has been related to three separate components: drive, beliefs and values, and motivation. Particularly in postmenopausal women, drive fades and is no longer the initial step in a woman's sexual response (if it ever was).

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List of disorders

DSM

The fourth edition of the Diagnostic and Statistical Manual of Mental Disorders lists the following sexual dysfunctions:

• Hypoactive sexual desire disorder (see also asexuality, which is not classified as a disorder)
• Sexual aversion disorder (avoidance of or lack of desire for sexual intercourse)
• Female sexual arousal disorder (failure of normal lubricating arousal response)
• Male erectile disorder
• Female orgasmic disorder (see Anorgasmia)
• Male orgasmic disorder (see Anorgasmia)
• Premature ejaculation
• Dyspareunia
• Vaginismus

Additional DSM sexual disorders that are not sexual dysfunctions include:

• Paraphilias
• PTSD due to genital mutilation or childhood sexual abuse

Other sexual problems

• Sexual dissatisfaction (non-specific)
• Lack of sexual desire
• Anorgasmia
• Impotence
• Sexually transmitted diseases
• Delay or absence of ejaculation, despite adequate stimulation
• Inability to control timing of ejaculation
• Inability to relax vaginal muscles enough to allow intercourse
• Inadequate vaginal lubrication preceding and during intercourse
• Burning pain on the vulva or in the vagina with contact to those areas
• Unhappiness or confusion related to sexual orientation
• Transsexual and transgender people may have sexual problems before or after surgery.
• Persistent sexual arousal syndrome
• Sexual addiction
• Hypersexuality
• All forms of Female genital cutting
• Post-orgasmic diseases, such as Dhat syndrome, post-coital tristesse (PCT), postorgasmic illness syndrome (POIS), and sexual headache.

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Treatment

Males

Several decades ago the medical community believed the majority of sexual dysfunction cases were related to psychological issues. Although this may be true for a portion of men, the vast majority of cases have now been identified as having a physical cause or correlation. If the sexual dysfunction is deemed to have a psychological component or cause, psychotherapy can help. Situational anxiety arises from an earlier bad incident or lack of experience. This anxiety often leads to development of fear towards sexual activity and avoidance. In return evading leads to a cycle of increased anxiety and desensitization of the penis. In some cases, erectile dysfunction may be due to marital disharmony. Marriage counseling sessions are recommended in this situation.

Lifestyle changes such as discontinuing smoking, drug or alcohol abuse can also help in some types of erectile dysfunction. Several oral medications like Viagra, Cialis and Levitra have become available to help people with erectile dysfunction and have become first line therapy. These medications provide an easy, safe, and effective treatment solution for approximately 60% of men. In the rest, the medications may not work because of wrong diagnosis or chronic history.

Another type of medication that is effective in roughly 85% of men is called intracavernous pharmacotherapy and involves injecting a vasodilator drug directly into the penis in order to stimulate an erection. This method has an increased risk of priapism if used in conjunction with other treatments, and localized pain.

When conservative therapies fail, are an unsatisfactory treatment option, or are contraindicated for use, the insertion of a penile prosthesis, or penile implant, may be selected by the patient. Technological advances have made the insertion of a penile prosthesis a safe option for the treatment of erectile dysfunction which provides the highest patient and partner satisfaction rates of all available ED treatment options.

Pelvic floor physical therapy has been shown to be a valid treatment for men with sexual problems and pelvic pain.

Females

Although there are no approved pharmaceuticals for addressing female sexual disorders, several are under investigation for their effectiveness. A vacuum device is the only approved medical device for arousal and orgasm disorders. It is designed to increase blood flow to the clitoris and external genitalia. Women experiencing pain with intercourse are often prescribed pain relievers or desensitizing agents. Others are prescribed lubricants and/or hormone therapy. Many patients with female sexual dysfunction are often also referred to a counselor or therapist for psychosocial counseling.

Menopause

Estrogens are responsible for the maintenance of collagen, elastic fibers, and vasoculature of the urogenital tract, all of which are important in maintaining vaginal structure and functional integrity; they are also important for maintaining vaginal pH and moisture levels, both of which aid in keeping the tissues lubricated and protected. Prolonged estrogen deficiency leads to atrophy, fibrosis, and reduced blood flow to the urogenital tract, which is what causes menopausal symptoms such as vaginal dryness and pain related to sexual activity and/or intercourse. It has been consistently demonstrated that women with lower sexual functioning have lower estradiol levels.

Androgen therapy for hypoactive sexual desire disorder (HSDD) has a small benefit but its safety is not known. It is not approved as a treatment in the United States. If used it is more common among women who have had an oophorectomy or who are in a postmenopausal state. However, like most treatments, this is also controversial. One study found that after a 24-week trial, those women taking androgens had higher scores of sexual desire compared to a placebo group. As with all pharmacological drugs, there are side effects in using androgens, which include hirutism, acne, ploycythaemia, increased high-density lipoproteins, cardiovascular risks, and endometrial hyperplasia is a possibility in women without hysterectomy. Alternative treatments include topical estrogen creams and gels can be applied to the vulva or vagina area to treat vaginal dryness and atrophy.

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Clinical studies

In modern times, the genuine clinical study of sexual problems is usually dated back no further than 1970 when Masters and Johnson's Human Sexual Inadequacy was published. It was the result of over a decade of work at the Reproductive Biology Research Foundation in St. Louis, involving 790 cases. The work grew from Masters and Johnson's earlier Human Sexual Response (1966).

Prior to Masters and Johnson the clinical approach to sexual problems was largely derived from the thinking of Freud. It was held with psychopathology and approached with a certain pessimism regarding the chance of help or improvement. Sexual problems were merely symptoms of a deeper malaise and the diagnostic approach was from the psychopathological. There was little distinction between difficulties in function and variations nor between perversion and problems. Despite work by psychotherapists such as Balint sexual difficulties were crudely split into frigidity or impotence, terms which too soon acquired negative connotations in popular culture.

The achievement of Human Sexual Inadequacy was to move thinking from psychopathology to learning, only if a problem did not respond to educative treatment would psychopathological problems be considered. Also treatment was directed at couples, whereas before partners would be seen individually. Masters and Johnson saw that sex was a joint act. They believed that sexual communication was the key issue to sexual problems not the specifics of an individual problem. They also proposed co-therapy, a matching pair of therapists to the clients, arguing that a lone male therapist could not fully comprehend female difficulties.

The basic Masters and Johnson treatment program was an intensive two-week program to develop efficient sexual communication. Couple-based and therapist led the program began with discussion and then sensate focus between the couple to develop shared experiences. From the experiences specific difficulties could be determined and approached with a specific therapy. In a limited number of male only cases (41) Masters and Johnson had developed the use of a female surrogate, an approach they soon abandoned over the ethical, legal and other problems it raised.

In defining the range of sexual problems Masters and Johnson defined a boundary between dysfunction and deviations. Dysfunctions were transitory and experienced by the majority of people, dysfunctions bounded male primary or secondary impotence, premature ejaculation, ejaculatory incompetence; female primary orgasmic dysfunction and situational orgasmic dysfunction; pain during intercourse (dyspareunia) and vaginismus. According to Masters and Johnson sexual arousal and climax are a normal physiological process of every functionally intact adult, but despite being autonomic it can be inhibited. Masters and Johnson treatment program for dysfunction was 81.1% successful.

Despite the work of Masters and Johnson the field in the US was quickly overrun by enthusiastic rather than systematic approaches, blurring the space between 'enrichment' and therapy. Although it has been argued that the impact of the work was such that it would be impossible to repeat such a clean experiment.

Source of the article : Wikipedia