Sexual dysfunction

Sexual dysfunction is difficulty experienced by an individual or partners during any stage of normal sexual activity, including physical pleasure, desire, preference, arousal, or orgasm. The World Health Organization defines sexual dysfunction as a "person's inability to participate in a sexual relationship as they would wish".[1] This definition is broad and is subject to many interpretations.[2] A diagnosis of sexual dysfunction under the DSM-5 requires a person to feel extreme distress and interpersonal strain for a minimum of six months (except for substance- or medication-induced sexual dysfunction). Sexual dysfunction can have a profound impact on an individual's perceived quality of sexual life.[3] 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.

Sexual dysfunction
Other namesSexual malfunction, sexual disorder
SpecialtySexology, gynecology, andrology

A thorough sexual history and assessment of general health and other sexual problems (if any) are important when assessing sexual dysfunction, because it is usually correlated with other psychiatric issues, such as mood disorders, eating and anxiety disorders, and schizophrenia.[4][5][2] 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 modified by Helen Singer Kaplan.

Types

Sexual dysfunction can be classified into four categories: sexual desire disorders, arousal disorders, orgasm disorders, and pain disorders. Dysfunction among men and women are studied in the fields of andrology and gynecology respectively.[6]

Sexual desire disorders

Sexual desire disorders or decreased libido are characterized by a lack of sexual desire, libido for sexual activity, or sexual fantasies for some time. The condition ranges from a general lack of sexual desire to a lack of sexual desire for the current partner. The condition may start after a period of normal sexual functioning, or the person may always have had an absence or a lesser intensity of sexual desire.

The causes vary considerably but include a 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 SSRIs), or psychiatric conditions, such as depression and anxiety. While many causes of low sexual desire are cited, only a few of these have ever been the object of empirical research.[7]

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.[8]

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 physiological origins to these disorders, such as decreased blood flow or lack of vaginal lubrication. Chronic disease and the partners' relationship can also contribute to dysfunction.

Additionally, postorgasmic illness syndrome (POIS) may cause symptoms when aroused, including adrenergic-type presentation: rapid breathing, paresthesia, palpitations, headaches, aphasia, nausea, itchy eyes, fever, muscle pain and weakness, and fatigue.

From the onset of arousal, symptoms can persist for up to a week in patients.

The cause of this condition is unknown; however, it is believed to be a pathology of either the immune system or autonomic nervous systems. It is defined as a rare disease by the National Institute of Health, but the prevalence is unknown. It is not thought to be psychiatric in nature, but it may present as anxiety relating to coital activities and may be incorrectly diagnosed as such. There is no known cure or treatment.[9]

Erectile dysfunction

Erectile dysfunction (ED), or impotence, is a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis. There are various underlying causes of ED, including damage to anatomical structures, psychological causes, medical disease, and drug use. Many of these causes are medically treatable.

Psychological ED can often be treated by almost anything that the patient believes in; there is a very strong placebo effect. Physical damage can be more difficult to treat. One leading physical cause of ED is continual or severe damage taken to the nervi erigentes, which can prevent or delay erection. 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 dysfunction. Diseases such as cardiovascular disease, multiple sclerosis, kidney failure, vascular disease, and spinal cord injury can cause erectile dysfunction.[10] Cardiovascular disease can decrease blood flow to penile tissues, making it difficult to develop or maintain an erection.

Due to the shame and embarrassment felt by some with erectile dysfunction, the subject was taboo for a long time and is the focus 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 newsworthiness of stories about it and heavy advertising.

It is estimated that around 30 million men in the United States and 152 million men worldwide have erectile dysfunction.[11][12] 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 the inability to insert the penis into the vagina, and has been mostly replaced by more precise terms.

ED from vascular disease is seen mainly amongst older individuals who have atherosclerosis. Vascular disease is common in individuals who smoke or have diabetes, peripheral vascular disease, or hypertension. Any time blood flow to the penis is impaired, ED can occur.

Drugs are also a cause of erectile dysfunction. Individuals who take drugs that lower blood pressure, antipsychotics, antidepressants, sedatives, narcotics, antacids, or alcohol can have problems with sexual function and loss of libido.[13]

Hormone deficiency is a relatively rare cause of erectile dysfunction. In individuals with testicular failure, as in Klinefelter syndrome, or those who have had radiation therapy, chemotherapy, or childhood exposure to the mumps virus, the testes may fail to produce testosterone. Other hormonal causes of erectile failure include brain tumors, hyperthyroidism, hypothyroidism, or adrenal gland disorders.[14]

Anorgasmia

Anorgasmia is classified as persistent delays or absence of orgasm following a normal sexual excitement phase in at least 75% of sexual encounters.[15]:368 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 cause of anorgasmia is menopause; one in three women report problems obtaining an orgasm during sexual stimulation following menopause.[16]

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 two minutes from the time of the insertion of the penis.[17] 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 for the patient, the partner, or both.[18]

Premature ejaculation has historically been attributed to psychological causes, but newer theories suggest that premature ejaculation may have an underlying neurobiological cause that may lead to rapid ejaculation.[19]

Post-orgasmic disorders

Post-orgasmic disorders 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, arousal or orgasm.

In men, POIS causes severe muscle pain throughout the body and other symptoms immediately following ejaculation. These symptoms last for up to a week.[20][21][22] Some doctors speculate that the frequency of POIS "in the population may be greater than has been reported in the academic literature",[23] and that many with POIS are undiagnosed.[24]

POIS may involve adrenergic symptoms: rapid breathing, paresthesia, palpitations, headaches, aphasia, nausea, itchy eyes, fever, muscle pain and weakness, and fatigue.

The etiology of this condition is unknown; however, it is believed to be a pathology of either the immune system or autonomic nervous systems. It is defined as a rare disease by the NIH, but the prevalence is unknown. It is not thought to be psychiatric in nature, but it may present as anxiety relating to coital activities and thus may be incorrectly diagnosed as such. There is no known cure or treatment.[9]

Dhat syndrome is another condition which occurs in men: it is a culture-bound syndrome which causes anxious and dysphoric mood after sex. It is distinct from the low-mood and concentration problems (acute aphasia) seen in POIS.

Sexual pain disorders

Sexual pain disorders in women include dyspareunia (painful intercourse) and vaginismus (an involuntary spasm of the muscles of the vaginal wall that interferes with intercourse).

Dyspareunia may be caused by vaginal dryness. Poor lubrication may result from insufficient excitement and stimulation, or from hormonal changes caused by menopause, pregnancy, or breastfeeding. 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 vulvodynia, or vulvar vestibulitis when localized to the Vulval vestibule. 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. Its cause is unknown.

In men, structural abnormalities of the penis like Peyronie's disease can make sexual intercourse difficult and/or painful. The disease is characterized by thick fibrous bands in the penis that lead to excessive curvature during erection.[25] It has an incidence estimated at 0.4–3% or more,[26] is most common in men 40–70,[26] and has no certain cause. Risk factors include genetics, minor trauma (potentially during cystoscopy or transurethral resection of the prostate), chronic systemic vascular diseases, smoking, and alcohol consumption.[27]

Priapism is a painful erection that occurs for several hours and occurs in the absence of sexual stimulation. This condition develops when blood is trapped in the penis and is unable to drain. If the condition is not promptly treated, it can lead to severe scarring and permanent loss of erectile function. The disorder is most common in young men and children. Individuals with sickle-cell disease and those who use certain medications can often develop this disorder.[28]

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 include depression, sexual fears or guilt, past sexual trauma, and sexual disorders.[29]

Sexual dysfunction is especially common among people who have anxiety disorders.[2][30][31][5] Ordinary anxiety can cause erectile dysfunction in men without psychiatric problems, but clinically diagnosable disorders such as panic disorder commonly cause avoidance of intercourse and premature ejaculation.[32] Pain during intercourse is often a comorbidity of anxiety disorders among women.[33]

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.[34] For women, almost any physiological change that affects the reproductive system—premenstrual syndrome, pregnancy and the postpartum period, and menopause—can have an adverse effect on libido.[34] Back injuries 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 activity, as can 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.

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.[35] In aging women, it is natural for the vagina to narrow and atrophy. If a woman does not participate in sexual activity regularly (in particular, activities involving vaginal penetration), she will not be able to immediately accommodate a penis without risking pain or injury if she decides to engage in penetrative intercourse.[35] This can turn into a vicious cycle that often leads to female sexual dysfunction.[35]

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 a natural part of the aging process. Not all cultures seek treatment; for example, a population of men living in Mexico often accept ED as a normal part of their maturing sexuality.[36]

With SSRI medication

Sexual problems are common with SSRIs,[37] which can cause anorgasmia, erectile dysfunction, diminished libido, genital numbness, and sexual anhedonia (pleasureless orgasm).[38] Poor sexual function is also one of the most common reasons people stop the medication.[39] In some cases, symptoms of sexual dysfunction may persist after discontinuation of SSRIs.[38][40][41]:14[42][43] This combination of symptoms is sometimes referred to as post-SSRI sexual dysfunction.[44][45]

Pelvic floor dysfunction

Pelvic floor dysfunction can be an underlying cause of sexual dysfunction in both women and men, and is treatable by pelvic floor physical therapy, a type of physical therapy designed to restore the health and function of the pelvic floor and surrounding areas.[46][47][48][49][50]

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 perceive 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.[35] Several factors influence a women's perception of her sexual life. These can include race, gender, ethnicity, educational background, socioeconomic status, sexual orientation, financial resources, culture, and religion.[35] Cultural differences are also present in how women view menopause and its impact on health, self-image, and sexuality. A study 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.[35]

About one-third of the women experienced sexual dysfunction, which may lead to these women's loss of confidence in their sexual lives. Since these women have sexual problems, their sexual lives with their partners can become a burden without pleasure, and may eventually lose complete interest in sexual activity. Some of the women found it hard to be aroused mentally, while others 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 being uncomfortable, or an inability to concentrate on the sexual activity due to a bad mood or burdens from work. Other factors include physical discomfort or difficulty in achieving arousal, which could be caused by aging or changes in the body's condition.[51]

Sexual assault has been associated with excessive menstrual bleeding, genital burning, and painful intercourse (attributable to disease, injury, or otherwise), medically unexplained dysmenorrhea, menstrual irregularity, and lack of sexual pleasure. Physically violent assaults and those committed by strangers were most strongly related to reproductive symptoms. Multiple assaults, assaults accomplished by persuasion, spousal assault, and completed intercourse were most strongly related to sexual symptoms. Assault was occasionally associated more strongly with reproductive symptoms among women with lower income or less education, possibly because of economic stress or differences in assault circumstances. Associations with unexplained menstrual irregularity were strongest among African American women; ethnic differences in reported circumstances of assault appeared to account for these differences. Assault was associated with sexual indifference only among Latinas.[52]

Menopause

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, the decline in serum estrogens causes these changes in sexual functioning. Androgen depletion may also play a role, but current knowledge about 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 controversial. 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.[3][35][53] In addition, Dennerstien and colleagues found that the primary predictor of sexual response throughout menopause is prior sexual functioning,[3] which means that it is important to understand how the physiological changes in men and women can affect sexual desire.[35] Despite the apparent negative impact that menopause can have on sexuality and sexual functioning, sexual confidence and well-being can improve with age and menopausal status.[3] The impact that a relationship status can have on quality of life is often underestimated.

Testosterone, along with its metabolite dihydrotestosterone, is important to normal sexual function in men and women. Dihydrotestosterone is the most prevalent androgen in both men and women.[35] 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 have undergone bilateral oophorectomy experience a sudden drop in testosterone levels, as the ovaries produce 40% of the body's circulating testosterone.[35]

Sexual desire has been related to three separate components: drive, beliefs and values, and motivation.[35] Particularly in postmenopausal women, drive fades and is no longer the initial step in a woman's sexual response.[35]

Diagnosis

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)[54][55]
  • Female sexual arousal disorder (failure of normal lubricating arousal response)[56]
  • Male erectile disorder
  • Female orgasmic disorder (see anorgasmia)[57]
  • Male orgasmic disorder (see anorgasmia)[58]
  • Premature ejaculation
  • Dyspareunia
  • Vaginismus

Additional DSM sexual disorders that are not sexual dysfunctions include:

Other sexual problems

Treatment

Males

Several decades ago, the medical community believed most 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 to have a physical cause or correlation.[59] 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, and often leads to development of fear towards sexual activity and avoidance which enters 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 tobacco smoking or substance use can also treat some types of ED.[60] Several oral medications like Viagra, Cialis, and Levitra have become available to alleviate ED 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, which involves injecting a vasodilator drug directly into the penis to stimulate an erection.[61] This method has an increased risk of priapism if used in conjunction with other treatments, and localized pain.[18]

Premature ejaculations are treated by behavioural techniques Squeeze technique and Stop Start Technique. In Squeeze technique the area between head and shaft of penis is pressed using index finger and thumb just before ejaculation. In Stop Start Technique the male partner stops having sexual intercourse just before ejaculation and waits for the sense of ejaculation to pass away. Both Techniques are repeated many times.[62]

When conservative therapies fail, are an unsatisfactory treatment option, or are contraindicated for use, the insertion of a penile implant may be selected by the patient. Technological advances have made the insertion of a penile implant a safe option for the treatment of ED, which provides the highest patient and partner satisfaction rates of all available ED treatment options.[63]

Pelvic floor physical therapy has been shown to be a valid treatment for men with sexual problems and pelvic pain.[64]

The 2020 guidelines from the American College of Physicians support the discussion of testosterone treatment in adult men with age-related low levels of testosterone who have sexual dysfunction. They recommend yearly evaluation regarding possible improvement and, if none, to discontinue testosterone; intramuscular treatments should be considered rather than transdermal treatments due to costs and since the effectiveness and harm of either method is similar. Testosterone treatment for reasons other than possible improvement of sexual dysfunction may not be recommended.[65][66]

Females

In 2015, flibanserin was approved in the US to treat decreased sexual desire in women. While it is effective for some women, it has been criticized for its limited efficacy, and has many warnings and contraindications that limit its use.[67] Women experiencing pain with intercourse are often prescribed pain relievers or desensitizing agents; others are prescribed vaginal lubricants. Many women with sexual dysfunction are also referred to a counselor or sex therapist.[68]

Menopause

Estrogens are responsible for the maintenance of collagen, elastic fibers, and vasculature 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 help to keep the tissues lubricated and protected.[3] Prolonged estrogen deficiency leads to atrophy, fibrosis, and reduced blood flow to the urogenital tract, which cause menopausal symptoms such as vaginal dryness and pain related to sexual activity and/or intercourse.[3] It has been consistently demonstrated that women with lower sexual functioning have lower estradiol levels.[3] Women experiencing vaginal dryness who cannot use commercial lubricants may be able to use coconut oil as an alternative.[69]

Androgen therapy for hypoactive sexual desire disorder has a small benefit but its safety is not known.[70] It is not approved as a treatment in the United States.[70] It is more commonly used among women who have had an oophorectomy or are in a postmenopausal state. However, like most treatments, this is also controversial. One study found that after a 24-week trial, women taking androgens had higher scores of sexual desire compared to a placebo group.[3] As with all pharmacological drugs, there are side effects in using androgens, which include hirsutism, acne, polycythaemia, increased high-density lipoproteins, cardiovascular risks, and endometrial hyperplasia.[3] Alternative treatments include topical estrogen creams and gels that can be applied to the vulva or vagina area to treat vaginal dryness and atrophy.[3]

Research

In modern times, clinical study of sexual problems is usually dated back no earlier 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 Sigmund Freud. It was held to be 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 viewpoint. 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 acquired negative connotations in popular culture.

Human Sexual Inadequacy moved thinking from psychopathology to learning; psychopathological problems would only be considered if a problem did not respond to educative treatment. Treatment was directed at couples, whereas before partners would be seen individually. Masters and Johnson believed that sex was a joint act, and that sexual communication was the key issue to sexual problems, not the specifics of an individual problem. They also proposed co-therapy, with a pair of therapists to match 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. The program is couple-based and therapist-led, and began with discussion and 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 developed the use of a female surrogate, which was 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 most people, and included male primary or secondary impotence, premature ejaculation, and 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 they can be inhibited despite being autonomic responses. Masters and Johnson's treatment program for dysfunction was 81.1% successful.

Despite Masters and Johnson's work, sexual therapy in the US was overrun by enthusiastic rather than systematic approaches, blurring the space between "enrichment" and therapy.

See also

References

  1. International Statistical Classification of Diseases and Related Health Problems (10th (ICD-10) ed.). Geneva, Switzerland: World Health Organization (WHO). 2010.
  2. Lo YC, Chen HH, Huang SS (May 2020). "Panic Disorder Correlates With the Risk for Sexual Dysfunction". Journal of Psychiatric Practice. 26 (3): 185–200. doi:10.1097/PRA.0000000000000460. PMID 32421290. S2CID 218643956.
  3. Eden KJ, Wylie KR (July 2009). "Quality of sexual life and menopause". Women's Health. 5 (4): 385–396. doi:10.2217/whe.09.24. PMID 19586430.
  4. Waldinger MD (2015). "Psychiatric disorders and sexual dysfunction". Handbook of Clinical Neurology. 130: 469–89. doi:10.1016/B978-0-444-63247-0.00027-4. ISBN 9780444632470. PMID 26003261.
  5. Norton GR, Jehu D (April 1984). "The role of anxiety in sexual dysfunctions: a review". Archives of Sexual Behavior. 13 (2): 165–83. doi:10.1007/BF01542150. PMID 6145405. S2CID 19396561.
  6. van Andel T, de Boer H, Towns A (September 2015). Heinrich M, Jäger AK (eds.). "Gynaecological, andrological and urological problems: an ethnopharmacological perspective". Ethnopharmacology. 18: 199–212. doi:10.1002/9781118930717.ch18. ISBN 9781118930717.
  7. Maurice W (2007). "Sexual Desire Disorders in Men.". In Leiblum S (ed.). Principles and Practice of Sex Therapy (4th ed.). New York: The Guilford Press.
  8. Hartley H (2006). "The 'pinking' of Viagra culture: Drug industry efforts to create and repackage sex drugs for women". Sexualities. 9 (3): 365. doi:10.1177/1363460706065058. S2CID 143113254.
  9. "Postorgasmic illness syndrome". Genetic and Rare Diseases Information Center (GARD) – an NCATS Program.
  10. {{cite book Nolen-Hoeksema S | date = 2013 | chapter = Sexual Dysfunctions. | title = Abnormal Psychology | publisher = McGraw Hill Education }}
  11. NIH Consensus Development Panel on Impotence (1993). "Impotence". Journal of the American Medical Association. 270: 83–90. doi:10.1001/jama.270.1.83.
  12. Ayta IA, McKinlay JB, Krane RJ (July 1999). "The likely worldwide increase in erectile dysfunction between 1995 and 2025 and some possible policy consequences". BJU International. 84 (1): 50–56. doi:10.1046/j.1464-410x.1999.00142.x. PMID 10444124. S2CID 35772517.
  13. Gupta AK, Chaudhry M, Elewski B (July 2003). "Tinea corporis, tinea cruris, tinea nigra, and piedra". Dermatologic Clinics. 21 (3): 395–400, v. doi:10.1016/S0733-8635(03)00031-7. PMID 12956194.
  14. Strange sexual disorders Ask Men. Retrieved on February 18, 2010
  15. Nolen-Hoeksema S (2014). Abnormal Psychology. New York: McGraw-Hill. ISBN 978-1-259-06072-4.
  16. {{cite book Nolen-Hoeksema S | date = 2013 | edition = 6th | chapter = Sexual Dysfunctions. | title = Abnormal Psychology | publisher = McGraw Hill Education | page = 368 }}
  17. Waldinger MD, Berendsen HH, Blok BF, Olivier B, Holstege G (May 1998). "Premature ejaculation and serotonergic antidepressants-induced delayed ejaculation: the involvement of the serotonergic system". Behavioural Brain Research. 92 (2): 111–8. doi:10.1016/s0166-4328(97)00183-6. PMID 9638953. S2CID 23494410.
  18. Diaz VA, Close JD (September 2010). "Male sexual dysfunction". Primary Care. Elsevier. 37 (3): 473–489. doi:10.1016/j.pop.2010.04.002. PMID 20705194.
  19. Laumann EO, Nicolosi A, Glasser DB, Paik A, Gingell C, Moreira E, Wang T (2005). "Sexual problems among women and men aged 40-80 y: prevalence and correlates identified in the Global Study of Sexual Attitudes and Behaviors". International Journal of Impotence Research. 17 (1): 39–57. doi:10.1038/sj.ijir.3901250. PMID 15215881. S2CID 13187709.
  20. Balon R, Segraves RT, eds. (2005). Handbook of Sexual Dysfunction. Taylor & Francis. ISBN 9780824758264.
  21. Wylie KR, ed. (2015). ABC of Sexual Health. John Wiley & Sons. p. 75. ISBN 9781118665565.
  22. "Postorgasmic illness syndrome". Genetic and Rare Diseases Information Center (GARD). National Institutes of Health. 2015. Archived from the original on 5 March 2016. Retrieved 30 July 2015.
  23. Ashby J, Goldmeier D (May 2010). "Postorgasm illness syndrome--a spectrum of illnesses". The Journal of Sexual Medicine. 7 (5): 1976–1981. doi:10.1111/j.1743-6109.2010.01707.x. PMID 20214722.
  24. McMahon CG (October 2014). "Post-Orgasmic Illness Syndrome" (PDF). 16th World Meeting on Sexual Medicine. Archived from the original (PDF) on 2016-03-04. Retrieved 2015-08-24.
  25. "Analysis of abnormal sexual disturbances". Archived from the original on 2010-02-09.
  26. Lizza E (2021-04-27). "Peyronie Disease: Practice Essentials, Problem, Epidemiology". Medscape.
  27. Lizza E (2021-04-27). "Peyronie Disease: Practice Essentials, Problem, Epidemiology". Medscape.
  28. Priapism in Emergency Medicine, eMedicine. Retrieved on 2010-02-18
  29. Michetti PM, Rossi R, Bonanno D, Tiesi A, Simonelli C (2005). "Male sexuality and regulation of emotions: a study on the association between alexithymia and erectile dysfunction (ED)". International Journal of Impotence Research. 18 (2): 170–174. doi:10.1038/sj.ijir.3901386. PMID 16151475.
  30. Kaplan HS (October 1988). "Anxiety and sexual dysfunction". The Journal of Clinical Psychiatry. 49 Suppl: 21–5. PMID 3170497.
  31. Cooper AJ (June 1969). "A clinical study of "coital anxiety" in male potency disorders". Journal of Psychosomatic Research. 13 (2): 143–7. doi:10.1016/0022-3999(69)90055-5. PMID 5789606.
  32. "Premature Ejaculation Treatment in Ayurveda | Cure Premature Ejaculation". 2018-09-06.
  33. Coretti G, Baldi I (August 1, 2007). "The Relationship Between Anxiety Disorders and Sexual Dysfunction". Psychiatric Times. 24 (9).
  34. Saks BR (April 15, 2008). "Common issues in female sexual dysfunction". Psychiatric Times. 25 (5).
  35. Kingsberg SA (October 2002). "The impact of aging on sexual function in women and their partners". Archives of Sexual Behavior. 31 (5): 431–437. doi:10.1023/A:1019844209233. PMID 12238611. S2CID 7762943.
  36. Wentzell E (March 2013). "Aging respectably by rejecting medicalization: Mexican men's reasons for not using erectile dysfunction drugs". Medical Anthropology Quarterly. 27 (1): 3–22. doi:10.1111/maq.12013. PMID 23674320.
  37. Taylor MJ, Rudkin L, Bullemor-Day P, Lubin J, Chukwujekwu C, Hawton K (May 2013). "Strategies for managing sexual dysfunction induced by antidepressant medication". The Cochrane Database of Systematic Reviews. 5 (5): CD003382. doi:10.1002/14651858.CD003382.pub3. PMID 23728643.
  38. Bahrick AS (2008). "Persistence of Sexual Dysfunction Side Effects after Discontinuation of Antidepressant Medications: Emerging Evidence". The Open Psychology Journal. 1: 42–50. doi:10.2174/1874350100801010042.
  39. Kennedy SH, Rizvi S (April 2009). "Sexual dysfunction, depression, and the impact of antidepressants". Journal of Clinical Psychopharmacology. 29 (2): 157–164. doi:10.1097/jcp.0b013e31819c76e9. PMID 19512977. S2CID 739831.
  40. Waldinger MD (2015). "Psychiatric disorders and sexual dysfunction". Neurology of Sexual and Bladder Disorders. Handbook of Clinical Neurology. Vol. 130. pp. 479–83. doi:10.1016/B978-0-444-63247-0.00027-4. ISBN 978-0-444-63247-0. PMID 26003261.
  41. "Prozac Highlights of Prescribing Information" (PDF). Eli Lilly and Company. 24 March 2017.
  42. Reisman Y (October 2017). "Sexual Consequences of Post-SSRI Syndrome". Sexual Medicine Reviews. 5 (4): 429–433. doi:10.1016/j.sxmr.2017.05.002. PMID 28642048. Initial SSRI registration studies found that such side effects were reported by fewer than 10% of patients. When doctors specifically asked about treatment-emergent sexual difficulties, some found that they were present in up to 70% of patients.
  43. American Psychiatric Association (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.). Arlington: American Psychiatric Publishing. p. 449. ISBN 978-0-89042-555-8.
  44. Healy D (September 2019). "Post-SSRI sexual dysfunction & other enduring sexual dysfunctions". Epidemiology and Psychiatric Sciences. 29: e55. doi:10.1017/S2045796019000519. PMC 8061302. PMID 31543091. Close to 100% of takers of a selective serotonin reuptake inhibitor (SSRI) have a degree of genital sensory change within 30 min of taking.
  45. Bahrick AS (2006). "Post SSRI sexual dysfunction". American Society for the Advancement of Pharmacotherapy. Tablet 7.3: 2–3.
  46. "Male Pelvic Floor: Advanced Massage and Bodywork".
  47. "Pelvic Floor Dysfunction, Perineum Pain, Sore Pelvis". 2015-02-23.
  48. "Sexual Dysfunction | Beyond Basics Physical Therapy | New York City, Manhattan". Archived from the original on 2018-04-14. Retrieved 2016-08-31.
  49. Handa VL, Cundiff G, Chang HH, Helzlsouer KJ (May 2008). "Female sexual function and pelvic floor disorders". Obstetrics and Gynecology. 111 (5): 1045–1052. doi:10.1097/AOG.0b013e31816bbe85. PMC 2746737. PMID 18448734.
  50. Rosenbaum TY, Owens A (March 2008). "The role of pelvic floor physical therapy in the treatment of pelvic and genital pain-related sexual dysfunction (CME)". The Journal of Sexual Medicine. 5 (3): 513–523. doi:10.1111/j.1743-6109.2007.00761.x. PMID 18304280.
  51. "Overview of Sexual Dysfunction in Women - Women's Health Issues".
  52. "Saint Louis University Libraries | Saint Louis University". login.ezp.slu.edu. Retrieved 2020-12-17.
  53. Laumann EO, Paik A, Rosen RC (February 1999). "Sexual dysfunction in the United States: prevalence and predictors". JAMA. 281 (6): 537–544. doi:10.1001/jama.281.6.537. PMID 10022110.
  54. "Sexual Aversion Disorder". labs.la.utexas.edu. Retrieved 2021-10-22.
  55. Crenshaw TL (1985). "The sexual aversion syndrome". Journal of Sex & Marital Therapy. 11 (4): 285–292. doi:10.1080/00926238508405454. PMID 4078910.
  56. "Female Sexual Interest/Arousal Disorders". labs.la.utexas.edu. Retrieved 2021-10-22.
  57. Rellini AH, Clifton J (2011). "Female orgasmic disorder". Sexual Dysfunction: Beyond the Brain-Body Connection. Advances in Psychosomatic Medicine. Vol. 31. pp. 35–56. doi:10.1159/000328807. ISBN 978-3-8055-9825-5. PMID 22005203. S2CID 207708545.
  58. "Ejaculatory and Orgasmic Disorders". UCSF Department of Urology. Retrieved 2021-10-22.
  59. Jarow JP, Nana-Sinkam P, Sabbagh M, Eskew A (May 1996). "Outcome analysis of goal directed therapy for impotence". The Journal of Urology. 155 (5): 1609–1612. doi:10.1016/s0022-5347(01)66142-1. PMID 8627834.
  60. Merck Sharpe & Dohme. "Male genital and sexual disorders" 2010-02-18.
  61. Rodríguez Vela L, Moncada Iribarren I, Gonzalvo Ibarra A, Sáenz de Tejada y Gorman I (April 1998). "[Treatment of erectile dysfunction using intracavernous pharmacotherapy]". Actas Urologicas Espanolas. 22 (4): 291–319. PMID 9658642.
  62. Jannini EA, McMahon CG, Waldinger MD (2012-08-31). Premature Ejaculation: From Etiology to Diagnosis and Treatment. Springer Science & Business Media. ISBN 978-88-470-2646-9.
  63. Rajpurkar A, Dhabuwala CB (July 2003). "Comparison of satisfaction rates and erectile function in patients treated with sildenafil, intracavernous prostaglandin E1 and penile implant surgery for erectile dysfunction in urology practice". The Journal of Urology. 170 (1): 159–163. doi:10.1097/01.ju.0000072524.82345.6d. PMID 12796670.
  64. "About Book | Heal Pelvic Pain". Archived from the original on 2019-04-26. Retrieved 2016-08-31.
  65. Qaseem A, Horwitch CA, Vijan S, Etxeandia-Ikobaltzeta I, Kansagara D, Forciea MA, et al. (January 2020). "Testosterone Treatment in Adult Men With Age-Related Low Testosterone: A Clinical Guideline From the American College of Physicians". Annals of Internal Medicine. 172 (2): 126–133. doi:10.7326/M19-0882. PMID 31905405.
  66. Parry NM (7 January 2020). "New Guideline for Testosterone Treatment in Men With 'Low T'". Medscape.com. Retrieved 7 January 2020.
  67. "FDA Approves First Drug to Boost Women's Sex Drive". www.webmd.com. Retrieved 2019-05-31.
  68. Amato P. "An update on therapeutic approaches to female sexual dysfunction". Female Sexual Dysfunction Online | A Blog to Document the High's and Low's of My Life. Archived from the original on 2008-10-04. Retrieved 2008-10-24.
  69. Evangelista, Mara Therese Padilla; Abad-Casintahan, Flordeliz; Lopez-Villafuerte, Lillian (January 2014). "The effect of topical virgin coconut oil on SCORAD index, transepidermal water loss, and skin capacitance in mild to moderate pediatric atopic dermatitis: a randomized, double-blind, clinical trial". International Journal of Dermatology. 53 (1): 100–108. doi:10.1111/ijd.12339. PMID 24320105.
  70. Wright JJ, O'Connor KM (May 2015). "Female sexual dysfunction". The Medical Clinics of North America. 99 (3): 607–628. doi:10.1016/j.mcna.2015.01.011. PMID 25841603.
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