Full text of DOI:10.1016/S0022-5347(05)67828-7

0022-5347/00/1633-0888/0
®
THE JOURNAL OF UROLOGY
Vol. 163, 888–893, March 2000
Copyright © 2000 by AMERICAN UROLOGICAL ASSOCIATION, INC.®
Printed in U.S.A.
REPORT OF THE INTERNATIONAL CONSENSUS DEVELOPMENT
CONFERENCE ON FEMALE SEXUAL DYSFUNCTION: DEFINITIONS
AND CLASSIFICATIONS
ROSEMARY BASSON,* JENNIFER BERMAN,* ARTHUR BURNETT,* LEONARD DEROGATIS,*
DAVID FERGUSON,* JEAN FOURCROY, IRWIN GOLDSTEIN,* ALESSANDRA GRAZIOTTIN,*
JULIA HEIMAN,* ELLEN LAAN,* SANDRA LEIBLUM,* HARIN PADMA-NATHAN,*
RAYMOND ROSEN,* KATHLEEN SEGRAVES,* R. TAYLOR SEGRAVES,* RIDWAN SHABSIGH,*
MARCALEE SIPSKI,* GORM WAGNER* AND BEVERLY WHIPPLE*
ABSTRACT
Purpose: Female sexual dysfunction is highly prevalent but not well defined or understood. We
evaluated and revised existing definitions and classifications of female sexual dysfunction.
Materials and Methods: An interdisciplinary consensus conference panel consisting of 19
experts in female sexual dysfunction selected from 5 countries was convened by the Sexual
Function Health Council of the American Foundation for Urologic Disease. A modified Delphi
method was used to develop consensus definitions and classifications, and build on the existing
framework of the International Classification of Diseases-10 and DSM-IV: Diagnostic and Sta-
tistical Manual of Mental Disorders of the American Psychiatric Association, which were limited
to consideration of psychiatric disorders.
Results: Classifications were expanded to include psychogenic and organic causes of desire,
arousal, orgasm and sexual pain disorders. An essential element of the new diagnostic system is the
“personal distress” criterion. In particular, new definitions of sexual arousal and hypoactive sexual
desire disorders were developed, and a new category of noncoital sexual pain disorder was added. In
addition, a new subtyping system for clinical diagnosis was devised. Guidelines for clinical end points
and outcomes were proposed, and important research goals and priorities were identified.
Conclusions: We recommend use of the new female sexual dysfunction diagnostic and classi-
fication system based on physiological as well as psychological pathophysiologies, and a personal
distress criterion for most diagnostic categories.
KEY WORDS: sexual dysfunctions, psychological; female; guidelines; classification; Delphi technique
Female sexual dysfunction is a multicausal and multidi- development of clinical research and practice has been the
mensional problem combining biological, psychological and
interpersonal determinants. It is age related, progressive
and highly prevalent, affecting 20% to 50% of women. Based
on epidemiological data from the National Health and Social
Life Survey a third of women lack sexual interest and nearly
a fourth do not experience orgasm.1 Approximately 20% of
women report lubrication difficulties and 20% find sex not
pleasurable. Female sexual dysfunction has a major impact
on quality of life and interpersonal relationships. For many
women it has been physically disconcerting, emotionally dis-
tressing and socially disruptive.
In contrast to the widespread interest in research and
treatment of male sexual dysfunction, less attention has been
paid to the sexual problems of women. Few studies have
investigated the psychological and physiological underpin-
nings of female sexual dysfunction and fewer treatments are
available for women than for men. A major barrier to the
absence of a well defined, broadly accepted diagnostic frame-
work and classification for female sexual dysfunction.
Nosological and diagnostic classifications have varied
among different diagnostic systems.2, 3 According to the
World Health Organization International Classifications of
Diseases-10 (ICD-10) the definition of sexual dysfunction
includes “the various ways in which an individual is unable
to participate in a sexual relationship as he or she would
wish.”4 Specific categories in the nomenclature include a lack
or loss of sexual desire (F52.0), sexual aversion disorder
(F52.1), failure of genital response (F52.2), orgasmic dysfunc-
tion (F52.3), nonorganic vaginismus (F52.5), nonorganic dys-
pareunia (F52.6) and excessive sexual drive (F52.7).
In contrast, the DSM-IV: Diagnostic and Statistical Man-
ual of Mental Disorders (DSM-IV) of the American Psychiat-
ric Association, which is specifically limited to psychiatric
disorders, concerns nomenclature for mental disorders and
was not intended to be used for classification of organic
causes of female sexual dysfunction.5 In the DSM-IV sexual
dysfunctions are defined as “disturbances in sexual desire
and in the psychophysiological changes that characterize the
sexual response cycle and cause marked distress and inter-
personal difficulty.” Disorders in women include hypoactive
sexual desire (302.71), sexual aversion (302.79), female
arousal disorder (302.72), female orgasmic disorder (302.73),
dyspareunia (302.76) and vaginismus (306.51). The DSM-IV
provides outcome criteria of “causes marked distress” and
“interpersonal difficulty” compared to the broader ICD-10
Accepted for publication October 1, 1999.
Supported by the Sexual Function Health Council of the American
Foundation for Urologic Disease through educational grants provided
by Affiliated Research Centers, Eli Lilly/ICOS Pharmaceuticals, Pen-
tech Pharmaceuticals, Pfizer Inc., Procter & Gamble, Schering-Plough,
Solway Pharmaceuticals, TAP Pharmaceuticals and Zonagen.
* Financial interest and/or other relationship with Affiliated Re-
search Centers, Astra, Bayer AG, Bristol-Myers Squibb, Eli Lilly,
Fournier Group, Glaxo Wellcome, Lilly/ICOS, Matrix Pharma,
NexMed, NitroMed, Pentech, Pfizer Inc., Pfizer Canada Ltd., Pfizer
UK, Pharmacia & Upjohn, Proctor & Gamble, Schering-Plough,
Senetek, Shwarz-Pharma, Solvay Pharmaceuticals, Syntec, Syntex,
TAP Pharmaceuticals, Vivus and/or Zonagen.
888

FEMALE SEXUAL DYSFUNCTION
889
outcome criterion of “being unable to participate in a sexual
All panelists were selected on the basis of research or
relationship as he or she would wish.” In different ways both clinical expertise in female sexual dysfunction as well as
systems recognize the need for a subjective distress criterion
in defining sexual dysfunction.
their position as “thought leaders” in this emerging field.
Nominations were provided by specialty societies, and au-
thorship of key publications was considered. The final panel
comprised leading European and North American investiga-
tors with representation from academic and private practice
settings. The 19 panelists from Canada, Denmark, Italy, The
Netherlands and the United States represented a wide range
of disciplinary backgrounds, including endocrinology, family
medicine, gynecology, nursing, pharmacology, physiology,
psychiatry, psychology, rehabilitation medicine and urology.
Each panelist fulfilled the aforementioned criteria and is
currently involved in research or treatment of female sexual
disorders. Full attendance at the consensus conference meet-
ing was required.
The ICD-10 and DSM-IV rely heavily on the human sexual
response cycle model first described by Masters and Johnson,6, 7
and later elaborated on by Kaplan.8, 9 This model emphasizes
that sexual response involves a temporal sequencing and coor-
dination of several phases, including sexual desire (libido),
arousal (excitement), orgasm and satisfaction. Furthermore,
both systems are based on the conceptualization of sexual re-
sponse as a “psychosomatic process” involving psychological
and somatic components (ICD-10). The DSM-IV provides a sep-
arate diagnostic category of “sexual dysfunction due to a gen-
eral medical condition” for sexual problems diagnosed as exclu-
sively due to the physiological effects of a medical condition. On
the other hand, sexual disorders, such as erectile dysfunction,
dyspareunia and vaginismus, are typically diagnosed indepen-
dently of etiology, which may be largely or entirely organic in
some cases. Furthermore, a high degree of overlap or co-
morbidity has been noted among the sexual disorders, particu-
The consensus panel meeting on October 22, 1998 in Bos-
ton consisted of closed session deliberations and involved
several key decision making components. Before the confer-
ence all panelists were provided with a complete bibliography
and readings on female sexual dysfunction, particularly con-
cerning physiology, pathophysiology, definition, classifica-
tion, epidemiology, diagnosis and treatment. A meeting
agenda and list of objectives were also provided in advance.
The meeting began with a review of current epidemiological
data on female sexual dysfunction, advantages and disadvan-
tages of the human sexual response cycle model, and
strengths and weaknesses of existing diagnostic systems.
Subsequently the panel began consensus deliberations in-
volving use of the Rand methodology for development of new
definitions and a classification system for female sexual dys-
function. The meeting duration was more than 15 hours.
Criteria for diagnostic decision making were evaluated
with a modified Delphi method. This consensus development
method involves intensive review of a specific topic area by
an expert panel, structured group discussion and consensus
voting according to a strict mathematical formula.14 The
approach is widely referred to as the Rand method for med-
ical decision making and technology assessment.14, 15 It syn-
thesizes the opinions of clinicians and research experts, and
is designed to develop consensus guidelines regarding the
appropriateness of use of clinical procedures or diagnostic
decision making.15 By drawing on the clinical knowledge and
experience of experts the process provides detailed clinical
guidelines for a broad range of situations. The advantages
are cost-effectiveness and timeliness, as the method draws on
a broad base of clinical and research data available at assess-
ment. The principal disadvantages are the limitations of
currently available data and the subjective nature of the
group decision making process. Fundamental elements in-
clude panel selection, development of appropriateness scales
and panel preparation, and a modified Delphi technique for
decision making and consensus development, group discus-
sion and reevaluation of the resulting consensus guidelines.
Panelists were invited to base judgments on personal views
and not the position of the society that may have nominated
them. A clinical definition or diagnosis was considered ap-
propriate when there was sufficient consensus, which was
based on group ratings on a 9-point scale of clinical appro-
priateness. Panel consensus voting was used to decide
whether a particular definition or diagnosis was appropriate
for a homogeneous category of patients. A definition was
deemed clearly appropriate if the median rating was 7 to 9
and clearly inappropriate if it was 1 to 3 points. Equivocal
definitions were those with ratings in the 4 to 6-point range
or when panelists disagreed on the proper rating.
larly in recent prevalence studies of female dysfunction.1, 10, 11
A
diagnostic system that is applicable in medical and mental
health settings is needed. It may be useful to develop a classi-
fication system for female dysfunction that would parallel the
clinical and basic science developments for men.12, 13
The 1992 National Institutes of Health Consensus Devel-
opment Conference on Impotence set the research agenda for
men with a preponderant discussion of organic causes and
physical determinants for erectile dysfunction.12 The major
findings included a new definition of erectile dysfunction,
comprehensive review of etiology and pathophysiology, and
guidelines for clinical diagnosis. The consensus statement
had immediate and far reaching effects in shaping the direc-
tion of research in basic and industry related studies of male
sexual dysfunction. Since the approval of sildenafil a more
recent consensus panel has recommended use of a process of
care model for patient assessment and treatment, including
an emphasis on educational interventions and a step care
treatment algorithm.13
Research on the causes and treatment of female sexual
dysfunction has lagged far behind. Recently an international
multidisciplinary consensus development conference on fe-
male sexual dysfunction was convened to begin to address
the shortcomings and problems associated with previous
classifications of female sexual dysfunction. We reviewed and
evaluated scientific information as well as current research
and clinical practice in the field. The resulting guidelines
were intended to be used by health care professionals and the
general public. A specific goal was to develop a consensus
based definition and classification system for female sexual
dysfunction that would include psychogenic and organically
based disorders. Other objectives were to develop guidelines
for clinical evaluation and end points, and identify critical
knowledge gaps and priorities for future research. We de-
scribe the results of the first International Consensus Devel-
opment Conference on Female Sexual Dysfunction.
METHODS
The first Consensus Development Panel on Female Sexual
Dysfunction was convened by the Sexual Function Health
Council of the American Foundation for Urologic Disease. An
initial planning meeting was held in conjunction with the
biannual meeting of the International Society of Impotence
Research in Amsterdam in August 1998. The overall aim was
to identify a multidisciplinary group of experts in the field
All ratings were confidential. Median rating was used as a
measure of the central tendency of panelist ratings. Mea-
of female sexuality, and develop
a conference format
and agenda. Panel co-chairs were selected, and the format and sures of agreement and disagreement were also tabulated. To
composition of the consensus panel were established. obtain definitions that panelists accepted as reasonable the

890
FEMALE SEXUAL DYSFUNCTION
extreme low and high scores were excluded from the median be based on the consensus conference definitions. For hypo-
calculation. Another concept for agreement was that ratings active sexual desire disorder clinical end points should in-
needed to be clustered in any 3-point range, even if the range
straddled the appropriateness categories defined previously.
If no agreement was reached, further discussion occurred
and the vote was retaken. A maximum of 2 votes was per-
mitted on any specific issue. Expert panel review and sub-
committee deliberations were held before preparation of the
final report.
clude measures of receptivity to as well as spontaneous
thoughts or fantasies about sexual activity. For sexual
arousal disorder in women clinical end points should include
measures of peripheral (lubrication, swelling) and central
(subjective arousal) responses to sexual stimulation.
Changes in sexual responsiveness should be associated with
a measurable decrease in personal distress as well as im-
provement in overall sexual satisfaction.
Several questionnaire measures of female sexual function
are available in the literature and some meet basic psycho-
metric criteria.16, 17 However, the published questionnaires
were developed before the current classification and do not
address some aspects of current definitions. Specific meas-
ures of personal distress are not included in these measures.
Other self-report measures described in the literature in-
clude structured interviews, event logs and patient diary
methods. Global assessments of efficacy are also used in
many clinical trials, and are potentially useful as primary or
secondary end points, depending on the study design and
trial setting. Further standardization and validation of these
measures are strongly recommended. New questionnaire and
diary measures are in development and hopefully will be
available shortly for use in clinical trials. Validation of these
instruments should be conducted before or in conjunction
with ongoing clinical trials.
To date vaginal photoplethysmography has been the most
widely used physiological measure, demonstrating adequate
validity and reliability in psychophysiological studies of
healthy and sexually dysfunctional women. Major drawbacks
include the absence of an absolute standard of measurement,
wide individual differences and potential susceptibility to
movement artifacts.18, 19 The method is best suited for within
subject, repeat measures designs (phase II trials) in which
careful control of stimulus conditions and response variables
is maintained. Several other physiological measurement ap-
proaches have been proposed and are in development, includ-
ing measures of clitoral and labial temperature and oxygen-
ation, vaginal and clitoral Doppler and blood flow measures,
and vaginometry.20 Despite the obvious interest and appeal
of these alternative measures, none has been adequately
validated or standardized in patients or healthy controls.
Quality of life measures are important in clinical trials of
sexual dysfunction, particularly measures of personal dis-
tress. To date there are no standardized measures of distress
related to sexual dysfunction in women. This area is impor-
tant for future development.
Research needs and priorities. Female sexual dysfunction
is an under researched and poorly understood area. The lack
of adequate experimental or clinical trial data was a consis-
tent theme of the panel deliberations. Recognizing the broad
need for basic and applied research in the area, the panel
identified major themes or topics for further research.
Epidemiological research on the prevalence, predictors and
outcomes of sexual dysfunction in women is urgently needed.
A recent study indicated that sexual dysfunction is highly
prevalent in women but was limited to those younger than 60
years and did not include a detailed clinical evaluation.1
Further epidemiological studies are needed and should be
based on the consensus definitions of sexual dysfunction.
Anatomical studies are needed to delineate more precisely
the pathway of vital nerves, arterial inflow and venous drain-
age of the multiple organs involved in normal female sexual
function. This knowledge may not only improve physiological
understanding of the sexual response, but also may lead to
innovative nerve sparing operative approaches during pelvic
surgery.
RESULTS
The final classification system, which follows the same
general structure as the DSM-IV and ICD-10, is shown in the
Appendix. It is noteworthy that the 4 major categories of
dysfunction, that is desire, arousal, orgasmic and sexual pain
disorders, described in the DSM-IV and ICD-10 were pre-
served, which was considered necessary to maintain continu-
ity in research and clinical practice. On the other hand, the
definitions of several disorders have been altered to reflect
current clinical and research practice, and a new category of
sexual pain disorder, including noncoital sexual pain, has
been added.
Definitions. Sexual Desire Disorders: Hypoactive sexual
desire disorder is the persistent or recurrent deficiency (or
absence) of sexual fantasies/thoughts, and/or desire for or
receptivity to sexual activity, which causes personal distress.
Sexual aversion disorder is the persistent or recurrent phobic
aversion to and avoidance of sexual contact with a sexual
partner, which causes personal distress.
Sexual Arousal Disorder is the persistent or recurrent in-
ability to attain or maintain sufficient sexual excitement,
causing personal distress, which may be expressed as a lack
of subjective excitement, or genital (lubrication/swelling) or
other somatic responses.
Orgasmic Disorder is the persistent or recurrent difficulty,
delay in or absence of attaining orgasm following sufficient
sexual stimulation and arousal, which causes personal dis-
tress.
Sexual Pain Disorders: Dyspareunia is the recurrent or
persistent genital pain associated with sexual intercourse.
Vaginismus is the recurrent or persistent involuntary spasm
of the musculature of the outer third of the vagina that
interferes with vaginal penetration, which causes personal
distress. Noncoital sexual pain disorder is recurrent or per-
sistent genital pain induced by noncoital sexual stimulation.
Each of these diagnoses is subtyped as A—lifelong versus
acquired type, B—generalized versus situational type and
C— etiologic origin (organic, psychogenic, mixed, unknown).
Subtyping is based ideally on the best available evidence
from the medical history, laboratory tests and physical ex-
amination. For example, the diagnosis of vaginismus would
be based in part on history of sexual difficulties as well as
patient inability to tolerate insertion of a speculum during a
pelvic examination. It is noteworthy that some women with
vaginismus are able to tolerate speculum insertion.
End points and outcomes. For clinical trials it is necessary
to specify clear end points and outcomes for female sexual
dysfunction. This task is not simple, given that common
sexual problems in women, such as low desire and anorgas-
mia, frequently involve overlapping subjective and physiolog-
ical components.10 Additionally, there appears to be signifi-
cant co-morbidity among diagnostic categories (for example
desire, arousal, orgasm, sexual pain disorders) which is not
always classifiable according to a primary or secondary diag-
nosis. A composite measure of sexual response, if statistically
sound, might be a useful overall outcome index.
Clinical trial research in female sexual dysfunction is in
the earliest stages. Accordingly, there are no widely used or
Biological mechanisms of sexual arousal and orgasm in
standardized end points. For future trials end points should women are poorly understood at present. For example, the

FEMALE SEXUAL DYSFUNCTION
891
neurophysiology of the female sexual response, including the Thus, the definition would not apply to the woman who lacks
role of neurotransmitters and local vasoactive substances in desire only in some circumstances (for example during peri-
determining vascular smooth muscle tone, vasodilation and
vaginal lubrication, has not been adequately studied. Like-
wise, the role of steroid hormones in the modulation of sexual
desire and arousal in women is not well understood.
The effects of aging and menopause on female sexual func-
tioning are important areas for further research. Of the fac-
tors mediating the effects of aging on sexual function in
women the role of hormones, psychosocial and interpersonal
factors, medication use and concomitant illnesses have not
been adequately delineated.
The relationship among sexual dysfunction in women,
physical or emotional distress and overall quality of life is
highly variable. Conversely, many women experience a lack
of satisfaction with their sexual relationship, despite the
ability to achieve arousal or orgasm. Many studies have
noted a lack of association between physiological and subjec-
tive concomitants of arousal in women. This phenomenon is
only minimally understood at present.21, 22 The determinants
of sexual desire in women also remain to be evaluated.
Urgent investigation is needed concerning development of
reproducible measurement devices and instruments for eval-
uating physiological parameters of the female sexual re-
sponse in the clinical setting. Parameters should include but
are not limited to measurements of genital blood flow, genital
engorgement, genital sensation, vaginal lubrication and vag-
inal elasticity.
Clinical trials of vasoactive agents and steroidal therapies
are strongly encouraged. It is uncertain whether vasoactive
drugs widely used for treatment of male erectile dysfunction
will have clinical usefulness in the treatment of specific dys-
functions in women. Likewise, controlled outcome studies of
psychosexual counseling for various indications are strongly
indicated. The safety and effectiveness of specific treatments
in defined patient populations (for example postmenopausal,
post-hysterectomy or other pelvic surgery, spinal cord in-
jury, post-cancer therapy) remain to be evaluated. Although
there is evidence that psychological sex therapy interven-
tions are efficacious for some disorders, further clinical trials
of psychosexual therapy alone or in combination with phar-
macological treatment are needed.
Finally, studies of physician awareness and competency in
female sexual dysfunction are urgently needed. Most physi-
cians and other health care providers receive little or no
formal training in this area. Physician and patient needs are
not well defined, nor are the public health or cost implica-
tions.
ods of marital conflict) or at certain times (for example before
or during menstruation). Similarly, even if sexual desire was
persistently lower than that of the partner or women of
comparable age and socioeconomic status, the definition
would not apply in the absence of personal distress related to
the problem.
Some panelists questioned the inclusion of sexual aversion
in the broader category of sexual desire disorders, although
currently there is not enough evidence to warrant removal of
the category or placement in a different dimension. It was
noted that some patients with this diagnosis have apparent
desire for sexual contact but are unable to initiate or respond
to contact due to phobic aversion. Further research on this
topic and the etiology of sexual desire disorders in general is
strongly recommended.
The definition of sexual arousal disorder was expanded to
incorporate nongenital and subjective dimensions of arousal.
Recognizing the wide range of physical and subjective reac-
tions that characterize female sexual arousal, the new defi-
nition refers to “lack of subjective excitement or a lack of
genital (lubrication/swelling) or other somatic responses.”
This new definition is more inclusive than the ICD-10 defi-
nition of “failure of genital response.”
A new category of noncoital sexual pain disorder was added
to the classification system, which is to be applied to recur-
rent or persistent genital pain induced by noncoital sexual
stimulation. It was noted that a significant number of women
experience pain during noncoital forms of sexual stimulation
who would not be included in the current categories of vag-
inismus or dyspareunia. This new category is also important
in recognizing that sexual activity for women need not nec-
essarily involve penile vaginal intercourse and the category
of sexual pain disorder may apply to nonheterosexual women
engaging in alternative sexual behaviors.
An essential element of the new diagnostic system is the
inclusion of a personal distress criterion for most of the
diagnostic categories. Thus, for hypoactive sexual desire dis-
order, sexual arousal disorder, orgasmic disorder and vagin-
ismus an essential element of the diagnosis is the require-
ment that the condition causes significant personal distress
for the individual. The assessment of personal distress can be
made via clinical interview or standardized questionnaire.
Existing measures of distress can be used or disease specific
assessment instruments could be developed. Currently there
are no validated sexual distress specific instruments for im-
mediate use in clinical trials of female sexual dysfunction.
Clinician assessment of personal distress involves query-
ing the patient about the level of dissatisfaction or bother
concerning the sexual difficulty. For example, a woman who
seldom reaches orgasm may report that it does not bother her
particularly and that she is still able to enjoy sexual relations
with her partner. Similarly, some women do not view low
sexual desire as a personal problem. In these instances a
diagnosis of sexual dysfunction would not be given due to the
absence of personal distress on the part of the patient. The
reaction of the sexual partner may be a cause of concern or
bother to the patient but is insufficient as a basis for diag-
nosis. For instance, if a woman reports that her partner is
dissatisfied with her lack of orgasm but that it does not
bother her personally, a specific diagnosis would not be
given. Counseling may still be recommended in such cases
due to the conflict or incompatibility in expectations regard-
ing adequate sexual functioning.
DISCUSSION
Female sexual dysfunction is a highly prevalent condition,
affecting up to 40% of women in the United States.1, 11
A
strong need has been identified for new definitions and clas-
sification of female sexual dysfunction as well as a new set of
diagnostic criteria. The consensus conference was convened
specifically to meet these needs. While the major categories
of sexual dysfunction in the ICD-10 and DSM-IV were pre-
served, in the absence of evidence based justification for
departure from these systems, significant changes were
made in several areas.
The definition of hypoactive sexual desire was broadened
to include a lack of receptivity to sexual activity. Hypoactive
sexual desire is difficult to define in absolute terms given the
lack of reliable population norms.1, 10 However, the proposed
definition emphasizes the persistent lack or deficiency of well
accepted markers of desire, such as sexual thoughts or fan-
tasies and desire for or receptivity to initiation by a partner.
In contrast to the DSM-IV, which was developed to provide
nomenclature for mental conditions and, thus, limited to
consideration of psychiatric disorders, the new consensus
The 2 important elements in the new definition are the classification system applies to all forms of female sexual
persistent lack of desire and resulting personal distress. dysfunction regardless of etiology. Thus, organic and psycho-

892
FEMALE SEXUAL DYSFUNCTION
genic forms of sexual dysfunction are included in the present tress criterion for most diagnostic categories. A new diagno-
classification. The fact that many dysfunctions in women are sis of noncoital sexual pain disorder was added to the cate-
not exclusively psychologically or organically based is gener- gory of sexual pain disorders and a new diagnostic category of
sexual satisfaction disorder was proposed but failed to
achieve complete consensus approval. In addition to the con-
sensus classification system, guidelines concerning clinical
end points and outcomes in female sexual dysfunction were
developed, and a list of current research topics and priorities
was proposed.
ally accepted. For example, physical findings of hypersensi-
tivity and allodynia of the vestibular margin in some cases of
dyspareunia or increased muscle tone in the perivaginal
muscles often associated with vaginismus may be associated
with strong central or psychological determinants.23 A new
typology for differentiating organic, psychogenic, mixed and
uncertain etiologies is included in the proposed subtyping.
The etiological category of “unknown” was added, which is
recommended for use when the diagnosing clinician has in-
adequate basis for etiological formulation, based on patient
history, physical examination or laboratory tests.
Thomas Bruckman and Bette Rank, American Foundation
for Urologic Disease, provided support and assistance.
APPENDIX: CLASSIFICATION OF FEMALE SEXUAL
DYSFUNCTION
Finally, there were extended discussions among panelists
about the introduction of a new diagnostic category of sexual
satisfaction disorder. It was proposed that this diagnosis be
applied when a woman is unable to achieve subjective sexual
satisfaction, despite adequate desire, arousal and orgasm. It
was noted by several panelists that this diagnosis applied to
a significant number of women who sought help for sexual
dysfunction. Complaints of this type are difficult to incorpo-
rate within the existing nosological framework. It was also
suggested that publication of a new diagnostic category
would stimulate research on the epidemiological prevalence
of the disorder as well as studies of the underlying mecha-
nisms and psychological processes. On the negative side of
the issue, several panelists noted the absence of adequate
epidemiological or clinical evidence in support of this new
category. The difficulty in defining diagnostic thresholds or
criteria for making the diagnosis was also noted. Although a
majority of panelists favored introduction of this new cate-
gory, following 2 rounds of voting and discussion the panel
failed to reach satisfactory consensus. Instead, a recommen-
dation was made to reconsider this proposal when additional
epidemiological and clinical data become available. Further
research on this topic is strongly encouraged.
Clearer specification of end points and outcomes is re-
quired for clinical trials of female sexual dysfunction. We
reached several major conclusions. Clinical end points should
be based on the consensus guidelines for definition and clas-
sification of female sexual dysfunction. For large scale clini-
cal trials patient self-report measures are generally pre-
ferred, which could include standardized questionnaires or
event log types of measures. Specific changes in sexual func-
tion should be defined as primary and secondary end points
in all clinical trials. In accordance with the current consensus
definitions, measures of personal distress should be included
with other quality of life measures, which in most instances
will serve as important secondary end points. Physiological
end points, such as vaginal photoplethysmography or vaginal
ultrasound, are of potential value in investigations of drug
dosages or mechanisms of action. When such measures are
used, emphasis needs to be placed on the conditions of stim-
ulation and laboratory setting in which the research is con-
ducted. Further research is urgently needed on the sensitiv-
ity and reliability of patient based and physiological
measures of sexual response in women.
1999 Consensus Classification System
I. Sexual desire disorders:
A. Hypoactive sexual desire disorder
B. Sexual aversion disorder
II. Sexual arousal disorder
III. Orgasmic disorder
IV. Sexual pain disorders:
A. Dyspareunia
B. Vaginismus
C. Other sexual pain disorders
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CONCLUSIONS
We considered the previous diagnostic systems proposed
by the DSM-IV and ICD-10, used a modified Delphi method
for determining the appropriateness of each category and
definition, and expanded definitions to include physical as
well as psychological causes of female sexual dysfunction.
Although the 4 major categories of desire, arousal, orgasmic
and sexual pain disorders in the DSM-IV were retained,
several changes were made in the specific definitions and
criteria for each diagnosis, including use of a personal dis-

FEMALE SEXUAL DYSFUNCTION
893
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