anorgasmia

無オルガスム症 　

WordNet

1. absence of an orgasm in sexual relations

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/01/09 23:17:33」(JST)

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Anorgasmia
Classification and external resources
Specialty	psychiatry
ICD-10	F52.3
ICD-9-CM	302.73, 302.74
DiseasesDB	23879
eMedicine	article/295376 article/295379

Anorgasmia, or Coughlan's syndrome, is a type of sexual dysfunction in which a person cannot achieve orgasm despite adequate stimulation. In males, it is most closely associated with delayed ejaculation. Anorgasmia can often cause sexual frustration. Anorgasmia is far more common in females (4.7 percent) than in males and is especially rare in younger men. The problem is greater in women who are post-menopause.

Causes

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 unclosed episiotomy), 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). Though reporting of anorgasmia as a side effect of SSRIs is not precise, studies have found that 17–41% of users of such medications are affected by some form of sexual dysfunction.

Another cause of anorgasmia is opiate addiction, particularly to heroin. Beat icon William S. Burroughs chronicled this problem (amongst many others) in his novel Naked Lunch. About 15% of women report difficulties with orgasm, and as many as 10% of women in the United States have never climaxed. Only 29% of women always have orgasms with their partner.

Primary anorgasmia

Primary anorgasmia is a condition where one has never experienced an orgasm. This is significantly more common in women, although it can occur in men who lack the gladipudendal (bulbocavernosus) reflex. Women with this condition can sometimes achieve a relatively low level of sexual excitement. Frustration, restlessness, and pelvic pain or a heavy pelvic sensation may occur because of vascular engorgement. On occasion, there may be no obvious reason why orgasm is unobtainable. In such cases, women report that they are unable to orgasm even if they have a caring, skilled partner, adequate time and privacy, and an absence of medical issues which would affect sexual satisfaction. The attention and skill of one's partner are not inextricably linked to woman's internal, implicit comfort level. Thus, anorgasmia in a woman whose partner is adequately attentive and skilled should not be regarded as a clinical mystery.

Some social theorists believe that inability to orgasm may be related to residual psychosocial perceptions that female sexual desire is somehow 'wrong,' and that this stems from the age of Victorian repression. It is thought that this view may impede some women – perhaps those raised in a more repressed environment – from being able to experience natural and healthy sexual feeling.

Secondary anorgasmia

Secondary anorgasmia is the loss of the ability to have orgasms (as opposed to primary anorgasmia which indicates a person who has never had an orgasm). Or loss of the ability to reach orgasm of past intensity. The cause may be alcoholism, depression, grief, pelvic surgery (such as total hysterectomy) or injuries, certain medications, illness, estrogen deprivation associated with menopause, or rape.

Prostatectomy

The prostate and surrounding organs.

Secondary anorgasmia is close to 50% among males undergoing prostatectomy; 80% among radical prostatectomies. This is a serious adverse result because radical prostatectomies are usually given to younger males who are expected to live more than 10 years. At more advanced ages, the prostate is less likely to grow during that person's remaining lifetime. This is generally caused by damage to the primary nerves serving the penile area, which pass near the prostate gland. Removal of the prostate frequently damages or even completely removes these nerves, making sexual response unreasonably difficult.

Situational anorgasmia

People who are orgasmic in some situations may not be in others. A person may have an orgasm from one type of stimulation but not from another, achieve orgasm with one partner but not another, or have an orgasm only under certain conditions or only with a certain type or amount of foreplay. These common variations are within the range of normal sexual expression and should not be considered problematic.

A person who is troubled by experiencing situational anorgasmia should be encouraged to explore alone and with his or her partner those factors that may affect whether or not he or she is orgasmic, such as fatigue, emotional concerns, feeling pressured to have sex when he or she is not interested, or a partner's sexual dysfunction. In the relatively common case of female situational anorgasmia during penile-vaginal intercourse, some sex therapists recommend that couples incorporate manual or vibrator stimulation during intercourse, or using the female-above position as it may allow for greater stimulation of the clitoris by the penis or pubic symphysis or both, and it allows the woman better control of movement.

Diagnosis

Effective treatment for anorgasmia depends on the cause. In the case of women suffering from psychological sexual trauma or inhibition, psychosexual counselling might be advisable and could be obtained through general practitioner (GP) referral.

Women suffering from anorgasmia with no obvious psychological cause would need to be examined by their GP to check for absence of disease. Blood tests would also need to be done (full blood count, liver function, oestradiol/estradiol, total testosterone, SHBG, FSH/LH, prolactin, thyroid function, lipids and fasting blood sugar) to check for other conditions such as diabetes, lack of ovulation, low thyroid function or hormone imbalances. The normal thresholds for these tests and timing in a woman's menstrual cycle is detailed in Berman et al., 2005.

They would then need to be referred to a specialist in sexual medicine. The specialist would check the patient's blood results for hormonal levels, thyroid function and diabetes, evaluate genital blood flow and genital sensation, as well as giving a neurological work-up to determine the degree (if any) of nerve damage.

Recently, it has been proposed to add a subtype of FOD, called reduced orgasmic intensity, and field trials are underway to assess the suitability of this proposal.

Treatment

Just as with erectile dysfunction in men, lack of sexual function in women may be treated with hormonal patches or tablets to correct hormonal imbalances, clitoral vacuum pump devices and medication to improve blood flow, sexual sensation and arousal.

Hitachi Magic Wand (HV-250R)

Over the years the Hitachi Magic Wand, a large, powerful vibrator, has become a fixture in courses that teach women how to reach orgasm. In 2008 Danish research showed that more than 93% of a group of 465 chronic anorgasmic women could reach orgasm using Hitachi Magic Wand and the Betty Dodson Method. Dodson's books include Liberating Masturbation, a self-published book that became a feminist classic. In the case of nerve damage, research is currently being undertaken at Johns Hopkins University to make damaged nerves in the human body regrow using the enzyme sialidase. It is possible that in the future pelvic nerve damage could be repaired in this way.

Many practitioners today treat both men and women who have SSRI-induced anorgasmia with sildenafil, more commonly known as Viagra. While this approach is known to work well in men with sexual dysfunction, it is only recently that the effectiveness of sildenafil in women with sexual dysfunction is coming to light. A recent study by H. G. Nurnberg et al. showed a complete or very significant reversal of their sexual dysfunction upon taking sildenafil one hour prior to sexual activity. In this study, eight out of the nine women required 50 mg of sildenafil while the 9th woman required 100 mg of sildenafil.

Another option for women who have SSRI-induced anorgasmia is the use of vardenafil. Vardenafil is a type 5 phosphodiesterase (PDE5) inhibitor that facilitates muscle relaxation and improves penile erection in men. However, there is much controversy about the efficiency of the drug used in the reversal of female sexual dysfunction. Vardenafil is similar to sildenafil, but vardenafil is less expensive and may be covered under some insurance plans. A study by A.K. Ashton M.D. has shown that in the case of one particular woman, the effects of vardenafil as opposed to sildenafil have not only been comparable in the effectiveness, but that vardenafil is cheaper and reversal of sexual dysfunction requires a smaller dose. So far, vardenafil has been approved by the Food and Drug administration only for use in men.

The NIH states that yohimbine hydrochloride has been shown in human studies to be possibly effective in the treatment of male impotence resulting from erectile dysfunction or SSRI usage (e.g., anorgasmia). Published reports have shown it to be effective in the treatment of orgasmic dysfunction in men.

Cabergoline, an agonist of dopamine D₂ receptors which inhibits prolactin production, was found in a small study to fully restore orgasm in one third of anorgasmic subjects, and partially restore orgasm in another third. Limited data has shown that the drug amantadine may help to relieve SSRI-induced sexual dysfunction. Cyproheptadine, buspirone, stimulants such as amphetamines (including the antidepressant bupropion), nefazodone and yohimbine have been used to treat SSRI-induced anorgasmia. Reducing the SSRI dosage may also resolve anorgasmia problems.

See also

• Delayed ejaculation
• Orgasm control
• Sexual dysfunction

References

• The original text for this article is taken from public domain CDC text.
• Berman, J. Bumiller, E. and Berman L. (2005) For Women Only, Revised Edition: A Revolutionary Guide to Reclaiming Your Sex Life, Owl Books, NY

External links

• Anorgasmia.net Anorgasmia: definition, causes, diagnosis and treatment
• University of California, Santa Barbara's SexInfo includes statistics, causes, and treatments for anorgasmia
• Definition of Anorgasmia, Mayo Clinic
• Push My Button, (2001) The New Scientist, Issue: 2271

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. 女性オルガズム障害：疫学、病因、臨床症状、経過、評価、および診断 female orgasmic disorder epidemiology pathogenesis clinical manifestations course assessment and diagnosis
• 2. 男性性機能障害の概要 overview of male sexual dysfunction
• 3. 女性のオルガスム障害の治療 treatment of female orgasmic disorder
• 4. フェチシズム fetishism
• 5. 選択的セロトニン再取り込み阻害剤（SSRI）関連の性機能不全：マネージメント sexual dysfunction associated with selective serotonin reuptake inhibitor ssri antidepressants management

English Journal

• Sexual side-effects of antidepressant and antipsychotic drugs.

• Montejo AL1, Montejo L, Navarro-Cremades F.
• Current opinion in psychiatry.Curr Opin Psychiatry.2015 Nov;28(6):418-23. doi: 10.1097/YCO.0000000000000198.
• PURPOSE OF REVIEW: Psychotropic-related sexual dysfunction is a quite frequent issue in clinical practice, mainly in chronic treatments affecting both quality of life and compliance.RECENT FINDINGS: In the last decade fortunately antidepressants and antipsychotic compounds have been deeply screened
• PMID 26382168

• Delayed orgasm and anorgasmia.

• Jenkins LC1, Mulhall JP2.
• Fertility and sterility.Fertil Steril.2015 Nov;104(5):1082-8. doi: 10.1016/j.fertnstert.2015.09.029. Epub 2015 Oct 9.
• Delayed orgasm/anorgasmia defined as the persistent or recurrent difficulty, delay in, or absence of attaining orgasm after sufficient sexual stimulation, which causes personal distress. Delayed orgasm and anorgasmia are associated with significant sexual dissatisfaction. A focused medical history c
• PMID 26439762

• Introduction: Ejaculatory problems and male infertility.

• Sigman M1.
• Fertility and sterility.Fertil Steril.2015 Nov;104(5):1049-50. doi: 10.1016/j.fertnstert.2015.09.026. Epub 2015 Oct 1.
• There are a variety of dysfunctions of the ejaculatory process which may negatively impact male fertility but are not commonly discussed. The meanings of the terms used to describe these conditions are often unclear. This month's Views and Reviews define the commonly used and confused terms. The ini
• PMID 26432529

Japanese Journal

• A Correlational Investigation of the Relationship between Primary Anorgasmia, Prepubescent Sexual Experience, and Age of First Love with Prosocial Personality

• TROMOVITCH Philip
• 同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University 60(4), 222-228, 2020-01
• 思春期前の自慰行為の頻度や性行為、初めての恋愛感情や性的欲望を経験するなど、早期の性的要因が、利他主義や心の温かさなど、向社会的な性格を予測する変数であるかどうかを見るために試験的な分析が行われた。データはMultinational Life Experience and Personality Project (MLEPP) の主要な第一段階で、18歳から59歳の日本人の成人2000人以上のサン …
• NAID 120006786458

• オルガズム単独障害と考えられた1例

• 天野 俊康,今尾 哲也,竹前 克朗
• 日本性機能学会雑誌 = The japanese journal of Impotence Research 24(1), 31-34, 2009-06-30
• NAID 10025186566

Related Links

• Anorgasmia - Wikipedia, la enciclopedia libre

La anorgasmia es la inhibición recurrente y persistente del orgasmo, manifestada por su ausencia tras una fase de excitación normal, y producida a través de una estimulación que pueda considerarse adecuada en intensidad, duración y tipo ...

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オルガスム、無オルガスム症 anorgasmia