Female Sexual Dysfunction: Evaluation and Treatment

Diagnosis

Female sexual dysfunction can be subdivided into desire, arousal, orgasmic and sexual pain disorders. Sexual pain disorders include dyspareunia and vaginismus.2

Estimates of the number of women who have sexual dysfunction range from 19 to 50 percent in “normal” outpatient populations3–6 and increase to 68 to 75 percent when sexual dissatisfaction or problems (not dysfunctional in nature) are included.5,7 Yet, one review of physicians' chart notes revealed a recorded sexual problem in only 2 percent.5 In another review, physician inquiry of patients in a gynecologic office setting about sexual problems increased reported complaints about sexual dysfunction sixfold.3 This discrepancy demonstrates a need for physician education in this area.

The diagnosis of female sexual dysfunction requires the physician to obtain a detailed patient history that defines the dysfunction, identifies causative or confounding medical or gynecologic conditions, and elicits psychosocial information.8 Preappointment questionnaires or appointments at which only the history is taken allow patient-physician communication to be unhindered by time constraints or patient fears of an upcoming physical examination.

Establishment of the patient's sexual orientation is necessary for appropriate evaluation and management. Nonjudgmental, direct questions best achieve this goal. Because gender identity conflicts are often a cause of sexual dysfunction, the mode and type of questions asked by physicians should create an environment where patients may openly express their concerns. Specialized counseling is important for these patients.

The sexual dysfunction should be defined in terms of onset and duration and situational versus global effect. A situational dysfunction occurs with a specific partner, in a certain setting or in a definable circumstance.

The presence of more than one dysfunction should be ascertained, because considerable interdependence may exist. For example, a patient complaining about decreased desire might have a primary orgasmic disorder from insufficient stimulation, with decreased desire developing secondarily as a result of unsatisfying sexual encounters (Figure 1).8 Thus, treating the orgasmic disorder would indirectly enhance desire; whereas, treating a desire disorder would be unsuccessful and perhaps add to patient frustration and perpetuate the cycle of dysfunction.

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FIGURE 1.

Cycle of sexual dysfunction. Example showing how a patient can enter the cycle of sexual dysfunction in one area (i.e., decreased orgasm) and proceed to another area (i.e., decreased desire) so that the presenting complaint may not represent the problem that actually requires evaluation and treatment.

Adapted with permission from Phillips NA. The clinical evaluation of dyspareunia. Int J Impot Res 1998;10(suppl 2):S117–20.

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FIGURE 1.

Cycle of sexual dysfunction. Example showing how a patient can enter the cycle of sexual dysfunction in one area (i.e., decreased orgasm) and proceed to another area (i.e., decreased desire) so that the presenting complaint may not represent the problem that actually requires evaluation and treatment.

Adapted with permission from Phillips NA. The clinical evaluation of dyspareunia. Int J Impot Res 1998;10(suppl 2):S117–20.

Questioning the patient about what she thinks is causing the problem may add insight. She may reveal fear of redeveloping an abnormal Papanicolaou smear from penile penetration, or she may admit that she is not attracted to her partner. Obtaining this information early in the evaluation process will expedite diagnosis and initiation of treatment.

Medical conditions are a frequent source of direct or indirect sexual difficulties. Vascular disease associated with diabetes might preclude adequate arousal; cardiovascular disease may inhibit intercourse secondary to dyspnea (Table 1).1 Arthritis or urinary incontinence may cause discomfort or embarrassment, leading to dysfunction or decreased sexual activity.2 Aggressive treatment of long-term disease and minor ailments, with attention to their sexual implications, will help enhance sexuality.

Prescription and over-the-counter medications, illicit drugs and alcohol abuse contribute to sexual dysfunction9,10  (Table 2).10 Medication changes, drug discontinuation, or dosage or schedule alterations may provide relief. Cigarette smoking, known to cause erectile dysfunction in men, may have a similar negative effect on arousal in women.

Gynecologic conditions contribute physically to sexual difficulties (Table 3),8 and treatment must address both of these issues. For example, treatment of a patient with recurrent cystitis as a cause of dyspareunia should include the use of lubricants and distraction techniques at first intercourse to assure adequate lubrication and relaxation, respectively. These steps help resolve any secondary difficulties that may have developed (e.g., an arousal disorder or mild vaginismus). For patients with a female partner, details concerning sexual habits and objects of penetration, if any, are necessary. In these instances, hygienic use of vibrators may result in fewer episodes of cystitis.

Hysterectomy, gynecologic malignancies and breast cancer present medical and mortality concerns, and alter or remove physical and psychologic symbols of femininity that may result in feelings of decreased sexuality. In one study,11 74 percent of patients who underwent surgery for gynecologic malignancy reported decreased desire, and 40 percent reported dyspareunia. In another study12 of patients who had undergone hysterectomy for benign disease, a decrease in sexual responsiveness of up to 30 percent was noted. Breast cancer survivors report a 21 to 39 percent incidence of sexual dysfunction,13 although a recent study14 suggests that this may be related to chemotherapy or hypoestrogenism secondary to ovarian failure. Preoperative counseling, including explanations of postoperative anatomy and potential effects on sexuality, is essential in these patient populations. Continued postoperative counseling and early recognition and treatment of sexual difficulties may also help these patients maintain satisfying sexual relationships.

Gynecologic changes related to a woman's reproductive life (e.g., puberty, pregnancy, the postpartum period and menopause) present unique problems and potential obstacles to sexuality. Puberty may lead to concerns regarding sexual identity. Pregnancy and the postpartum period are often associated with a decrease in sexual activity, desire and satisfaction, which may be prolonged with lactation.15

The hypoestrogenic state of menopause may cause significant physical changes16,17  (Table 4)17 and alterations in mood or a diminished sense of well-being, which have been found to have a significant, negative impact on sexuality.18 A decline in desire, arousal and frequency of intercourse and an increase in dyspareunia have been associated with menopause,19–21 although these findings are not universal.18

The final goal is to elicit psychosocial information. Previous experiences and current intra- and interpersonal factors should be explored (Table 5).

PHYSICAL EXAMINATION

Each patient should undergo a thorough examination, with the gynecologic examination individually guided by and tailored to patient comfort. The goal of the examination is detection of disease; however, the examination also provides an opportunity to educate the patient about normal anatomy and sexual function, and to reproduce and localize pain encountered during sexual activity.

A routine examination seeks signs of general medical conditions. The gynecologic examination is comprehensive (Table 3),8  beginning with inspection of the external genitalia, including a cotton swab test if indicated (gently touching the vestibule of the vagina with a cotton swab will elicit moderate to severe pain in patients with vulvar vestibulitis). For patients with dyspareunia, a “mono-manual” examination should follow, with one or two fingers in the vagina (proceeding from posterior to anterior), and the other hand held away from the abdomen so as not to confuse the source of discomfort (Table 3).8 Bimanual and rectovaginal examinations are then performed. The timing of the speculum examination is guided by patient symptoms. In patients with deep dyspareunia, the speculum examination should follow the bimanual examination because localization of pain is crucial in these patients. In patients in whom vaginitis, cervical cancer or a sexually transmitted disease is suspected, cultures and vaginal samples should be obtained first.

Laboratory testing should be guided by patient symptoms and examination findings. No specific tests are universally recommended for patients with sexual dysfunction. Attention to routine screening tests must not be overlooked.

General Treatment Guidelines

Following the patient history and physical examination, a suspected etiology may be treated.

If no etiology is discovered, basic treatment strategies are applied (Table 6). The patient's (and partner's) personal tastes and comfort must be considered. Physicians should respect a patient's choice to decline treatment, because studies show that sexual activity is not correlated with overall sexual satisfaction or intimacy in all persons.18,22 In general, treatments are similar despite sexual orientations.

DISORDERS OF DESIRE

Women with disorders of desire are difficult to treat. Occasionally, decreased desire in patients is secondary to boredom with sexual routines. Suggesting changes in positions or venues, or the addition of erotic materials is helpful.

Disorders of desire in premenopausal patients may be secondary to lifestyle factors (e.g., careers, children), medications or another sexual dysfunction (e.g., pain or orgasmic disorder). No medical treatment is available specific to patients with disorders of desire. If no underlying medical or hormonal etiology is discovered, individual or couple counseling may be helpful.

In peri- and postmenopausal women, the relationship between hormones and sexuality is unclear.18–21 Nonetheless, estrogen replacement therapy has been shown to correlate positively with sexual activity, enjoyment and fantasies—the latter thought to represent desire.23,24 The mechanism of estrogen's effect on desire is indirect and occurs through improvement in urogenital atrophy, vasomotor symptoms and menopausal mood disorders (i.e., depression). This relationship helps predict which patients are likely to respond to estrogen replacement therapy (i.e., those with symptoms of hypoestrogenism) and may explain why some studies do not show estrogen-mediated improvement in sexual functioning.25

The role of progesterone therapy, which is necessary in estrogen-treated patients with an intact uterus, has not been widely studied in terms of sexuality, but one study24 suggests that it exhibits a negative impact by dampening mood and decreasing available androgens. The addition of estrogen for several weeks before progesterone therapy is initiated, or taking into account monthly symptom calendars, will help determine each hormone's influence and guide dosage and schedule adjustments.

Testosterone appears to have a direct role in sexual desire.20 However, because studies evaluate mostly testosterone-deficient, oophorectomized women or women who develop supraphysiologic levels secondary to testosterone treatment, clinical applications are limited. No guidelines for testosterone replacement therapy for women with disorders of desire and no consensus of “normal” or “therapeutic” levels of testosterone therapy exist. Many physicians are concerned about the lack of safety data on the role of testosterone in breast cancer and on hepatic side effects; however, hepatocellular damage or carcinoma is rare at prescribed dosages,26 and the development of breast cancer has not been reported clinically.27

The side effects of testosterone, which occur in 5 to 35 percent of patients, include lower levels of high-density lipoprotein, acne, hirsutism, clitorimegaly and voice deepening.27 However, these side effects on lipoprotein levels are rarely significant if estrogen and testosterone are coadministered; moreover, most other side effects are reversible with discontinuation of testosterone or a dosage adjustment.26

A role for testosterone treatment exists in selected patients (Table 7). Coadministration with estrogen therapy should be provided to prevent deleterious effects on lipoprotein levels. Before initiating testosterone treatment, physicians should discuss the potential and theoretic risks, and individual risk and benefit assessments with the patient. In general, patients with current or previous breast cancer, uncontrolled hyperlipidemia, liver disease, acne or hirsutism should not receive testosterone therapy.

AROUSAL DISORDERS

Current treatment of patients with arousal disorders is limited to the use of commercial lubricants, although vitamin E and mineral oils are also options. Arousal disorders may be secondary to inadequate stimulation, especially in older women who require more stimulation to reach a level of arousal that was more easily attained at a younger age. Encouraging adequate foreplay or the use of vibrators to increase stimulation may be helpful. Taking a warm bath before intercourse may also increase arousal. Anxiety may inhibit arousal, and strategies to alleviate anxiety by employing distraction techniques are helpful.

Urogenital atrophy is the most common cause of arousal disorders in postmenopausal women, and estrogen replacement, when appropriate, is usually effective therapy. However, women taking systemic estrogens occasionally require supplementation with local therapy. Long-term use of estrogen-containing vaginal creams is considered an unopposed-estrogen treatment in women with an intact uterus, requiring progesterone opposition. An oral progesterone such as medroxyprogesterone 5 mg daily for 10 days every one to three months (or equivalent) may be used initially, with frequency or dosage increased if withdrawal bleeding occurs. Estring (an estradiol-containing vaginal ring) has little systemic absorption and does not require the addition of progesterone. Patients who are uncomfortable wearing the ring during the day often achieve relief with night use only.

Premenopausal women with arousal disorders, women who do not respond to estrogen therapy and women who are unable or unwilling to take estrogen represent difficult patient groups because few treatment options are available.

Investigators recognize that small-vessel atherosclerotic disease of the vagina and clitoris may contribute to arousal disorders and are exploring vasoactive medications as treatment.28 Small studies29,30 have been conducted with favorable results, but larger studies are needed. Currently, treatment of arousal disorder in women who are taking these medications, including sildenafil (Viagra), is not recommended, although anecdotal success has been reported.30

ORGASMIC DISORDERS

Anorgasmia is quite responsive to therapy. This condition is caused by sexual inexperience or the lack of sufficient stimulation and is common in women who have never experienced orgasm. Orgasmic disorders may also be psychologic (“involuntary inhibition” of the orgasmic reflex) or caused by medications or chronic disease.

Treatment relies on maximizing stimulation and minimizing inhibition.31  Stimulation may include masturbation with prolonged stimulation (initially up to one hour) and/or the use of a vibrator as needed, and muscular control of sexual tension (alternating contraction and relaxation of the pelvic muscles during high sexual arousal). The latter is similar to Kegel exercises (Table 8). Methods to minimize inhibition include distraction by “spectatoring” (observing oneself from a third-party perspective), fantasizing or listening to music. Women who do not respond to therapy should be referred to an appropriate therapist.

SEX PAIN DISORDERS

Dyspareunia can be divided into three types of pain: superficial, vaginal and deep (Table 6). Superficial dyspareunia occurs with attempted penetration, usually secondary to anatomic or irritative conditions, or vaginismus. Vaginal dyspareunia is pain related to friction (i.e., lubrication problems), including arousal disorders. Deep dyspareunia is pain related to thrusting, often associated with pelvic disease or relaxation.7

Diagnosis of an underlying etiology should be aggressively sought, even if surgical investigation (laparoscopy) is required. The physical examination must include meticulous detail, with the physician's focus on recreating the pain. Treatment of the underlying etiology is fundamental, but as in long-term pain disorders, counseling and pain control strategies are essential. General recommendations for improved sexual function are discussed in Table 6 and are similar despite sexual orientation.

Vaginismus, the involuntary contraction of the muscles of the outer one third of the vagina, is often related to sexual phobias or past abuse or trauma.10,32 Vaginismus may be complete or situational, so that a pelvic examination might be possible while intercourse is not. Therapy for and counseling of women with vaginismus can be initiated and often successfully completed by primary care physicians.

Treatment of women with vaginismus consists of progressive muscle relaxation and vaginal dilatation (actually a misnomer because the vagina is not physically stretched). Progressive muscle relaxation can be taught during an instructional examination by having the patient alternate contracting and relaxing the pelvic muscles around the examiner's finger. Women with vaginismus can achieve vaginal dilatation with the use of commercial dilators or tampons of increasing diameter, placed into the vagina for 15 minutes twice daily. Once the patient can easily accept an equivalent-sized dilator into the vagina, penile penetration by the partner can occur. Success rates approach 90 percent.31,32  Patients who do not respond to this therapy should be referred to a sex therapist who specializes in the treatment of women with this disorder (Table 9).