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Endocrinology

Hirsutism

Evaluate hirsutism by tempo, virilization, menstrual pattern, and objective androgen testing. Most cases reflect PCOS or idiopathic hyperandrogenism, but rapid progression, later onset, or marked biochemical androgen excess requires urgent exclusion of adrenal or ovarian neoplasia.

Clinical question: How should clinicians distinguish common hirsutism from tumor-associated androgen excess and select symptom-directed treatment?

First decision

Identify hirsutism that needs expedited evaluation

Tempo and virilization determine whether routine outpatient testing is appropriate.

At the first visit, establish age at onset, duration, rate of change, menstrual frequency, acne, female-pattern hair loss, and symptoms or signs of virilization. Assess BMI and blood pressure, and document whether symptoms are distressing enough to warrant treatment. Early-onset, slowly progressive mild androgen-excess features are more compatible with PCOS; late-onset or rapidly progressive virilizing symptoms are more concerning for an androgen-producing tumor. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentWileySociety for Endocrinology Clinical Practice Guideline for the ...

Actively look for syndrome-specific clues that redirect testing: Cushing syndrome features, severe insulin resistance, genital ambiguity, and findings of congenital adrenal hyperplasia. Genital ambiguity points toward virilizing forms of congenital adrenal hyperplasia; classic CAH may also present with hirsutism when glucocorticoid replacement is inadequate. WileySociety for Endocrinology Clinical Practice Guideline for the ...Oxford AcademicApproach to the Patient with Hirsutism - Oxford AcademicOxford AcademicEpidemiology, diagnosis and management of hirsutism: a ...

If neoplastic androgen excess is suspected on the basis of rapid progression, virilization, or concerning clinical context, make an urgent referral to a center with relevant endocrine and gynecologic expertise. Do not delay escalation by assuming PCOS solely because hirsutism and menstrual irregularity coexist. WileySociety for Endocrinology Clinical Practice Guideline for the ...Wolters KluwerPrevalence of Congenital Adrenal Hyperplasia in... : Indian Journal of Endocrinology and Metabolism

Clinical patterns that change the urgency and diagnostic branch. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentWileySociety for Endocrinology Clinical Practice Guideline for the ...Oxford AcademicApproach to the Patient with Hirsutism - Oxford AcademicOxford AcademicEpidemiology, diagnosis and management of hirsutism: a ...
PatternMost informative discriminatorImmediate next step
Mild, slowly progressive hirsutism beginning near pubertyMenstrual history plus androgen assessment; phenotype is commonly compatible with PCOS or idiopathic hyperandrogenism. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentWileySociety for Endocrinology Clinical Practice Guideline for the ...Perform targeted biochemical evaluation when clinically indicated and address distressing hair growth. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice EditionWolters KluwerScreening and Management of the Hyperandrogenic Adolescent
Rapid progression, later onset, or virilizing featuresClinical tempo and virilization predict non-PCOS pathology, including androgen-producing tumor. WileySociety for Endocrinology Clinical Practice Guideline for the ...Urgently refer for expert evaluation of neoplastic androgen excess. WileySociety for Endocrinology Clinical Practice Guideline for the ...
Elevated testosterone or phenotype suggestive of adrenal enzyme defect17-hydroxyprogesterone pattern distinguishes possible nonclassic CAH from more common causes. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice EditionWileySociety for Endocrinology Clinical Practice Guideline for the ...Obtain morning follicular-phase 17-hydroxyprogesterone and proceed to stimulation testing if elevated. WileySociety for Endocrinology Clinical Practice Guideline for the ...
Genital ambiguity or known classic CAHSuggests virilizing congenital adrenal hyperplasia or inadequate glucocorticoid replacement. Oxford AcademicApproach to the Patient with Hirsutism - Oxford AcademicOxford AcademicEpidemiology, diagnosis and management of hirsutism: a ...Assess CAH-directed endocrine management rather than classifying the presentation as isolated PCOS. Oxford AcademicEpidemiology, diagnosis and management of hirsutism: a ...

Testing

Select androgen testing by severity and phenotype

Avoid indiscriminate panels in isolated low-burden hair growth, but do not miss biochemical hyperandrogenism.

Use the clinical examination and modified Ferriman-Gallwey score to determine testing intensity. In isolated hair growth or a low modified Ferriman-Gallwey score, biochemical testing is usually unnecessary. For the common mild presentation without red flags, measure testosterone and SHBG and calculate the free androgen index using the local laboratory reference range; there is no universally accepted normal free androgen index cutoff. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice Edition

In adolescents with clinical hyperandrogenism, guidelines commonly include total testosterone, free testosterone, or both. A total or free testosterone concentration above adult female normative values supports biochemical hyperandrogenism; interpretation must use the reporting laboratory's adult female reference interval. Wolters KluwerScreening and Management of the Hyperandrogenic Adolescent

Use a broader androgen panel—17-hydroxyprogesterone, androstenedione, DHEAS, and testosterone—when red flags suggest marked androgen excess, an adrenal process, or another endocrinopathy. This approach is more appropriate than pelvic ultrasonography as the initial universal test for an adolescent presenting with hirsutism. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice EditionBMJApproach to the adolescent presenting with hirsutism

Targeted biochemical testing for hirsutism. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice EditionWolters KluwerScreening and Management of the Hyperandrogenic AdolescentWileySociety for Endocrinology Clinical Practice Guideline for the ...
Clinical settingTest and timingResult interpretation and next action
Isolated low-burden hair growth without red flagsUsually no biochemical testing. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice EditionProvide symptom-directed management if hair growth is distressing. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentCochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane Library
Mild hirsutism without red flagsTotal testosterone and SHBG; calculate free androgen index using local cutoffs. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice EditionInterpret against laboratory standards; expand evaluation if testosterone is elevated or phenotype changes. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice Edition
Clinical hyperandrogenism in an adolescentTotal testosterone, free testosterone, or both; screen with 17-hydroxyprogesterone. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentValues above adult female norms support biochemical hyperandrogenism; evaluate alternate causes before labeling PCOS. Wolters KluwerScreening and Management of the Hyperandrogenic Adolescent
Elevated testosterone or suspected nonclassic CAHMorning follicular-phase basal 17-hydroxyprogesterone. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice EditionWileySociety for Endocrinology Clinical Practice Guideline for the ...More than 5 l/L: proceed to stimulation testing; stimulated value more than 30 l/L is diagnostic in the cited guideline. WileySociety for Endocrinology Clinical Practice Guideline for the ...
Rapid progression or virilizationAndrogen testing directed by an expert center. WileySociety for Endocrinology Clinical Practice Guideline for the ...Urgently evaluate for androgen-producing neoplasia rather than managing as routine PCOS. WileySociety for Endocrinology Clinical Practice Guideline for the ...

Interpretation that changes the branch

An elevated 17-hydroxyprogesterone redirects evaluation toward nonclassic congenital adrenal hyperplasia, which can resemble PCOS through menstrual irregularity, hirsutism, and acne. Nonclassic CAH usually has an insidious course beginning around puberty, whereas overt virilization is unusual; this contrasts with the rapid virilization that should heighten concern for an androgen-secreting tumor. WileySociety for Endocrinology Clinical Practice Guideline for the ...Oxford AcademicNon-Classical Congenital Adrenal Hyperplasia vs. Polycystic ...

Differential

Separate PCOS, nonclassic CAH, and neoplastic androgen excess

Clinical pattern plus targeted hormones should determine the next referral and treatment pathway.

PCOS is the most common hyperandrogenic disorder associated with hirsutism. A pattern of hirsutism with acne, androgenic alopecia, and menstrual irregularity supports hyperandrogenism, but secondary causes relevant to a PCOS-like presentation include hypothyroidism, hyperprolactinemia, nonclassic congenital adrenal hyperplasia, adrenal or ovarian neoplasms, Cushing syndrome, and acromegaly. Oxford AcademicEvaluation and Treatment of Hirsutism in Premenopausal ...Wolters KluwerPrevalence of Congenital Adrenal Hyperplasia in... : Indian Journal of Endocrinology and MetabolismWileyApproach to androgen excess in women: Clinical and biochemical ...

Nonclassic congenital adrenal hyperplasia should be considered particularly when symptoms are insidious from puberty and 17-hydroxyprogesterone is elevated. Basal morning follicular-phase 17-hydroxyprogesterone greater than 5 l/L warrants stimulation testing; a stimulated concentration greater than 30 l/L is diagnostic in the cited clinical guideline. WileySociety for Endocrinology Clinical Practice Guideline for the ...

Androgen-secreting tumors are uncommon but clinically consequential. Older age, late onset, rapid progression, and virilization are the most useful bedside triggers for urgent specialty assessment. In postmenopausal patients, androgen excess may originate in the ovary or adrenal gland, so the diagnostic strategy should not presume a single source. WileySociety for Endocrinology Clinical Practice Guideline for the ...Oxford AcademicAndrogen-Secreting Adrenal Adenoma in a Postmenopausal ...Oxford AcademicApproach to Investigation of Hyperandrogenism in a ...

Etiologic pattern recognition in hirsutism. Oxford AcademicEvaluation and Treatment of Hirsutism in Premenopausal ...WileySociety for Endocrinology Clinical Practice Guideline for the ...Wolters KluwerPrevalence of Congenital Adrenal Hyperplasia in... : Indian Journal of Endocrinology and MetabolismOxford AcademicAndrogen-Secreting Adrenal Adenoma in a Postmenopausal ...Oxford AcademicApproach to Investigation of Hyperandrogenism in a ...
Etiologic branchClues favoring the diagnosisDecisive next action
PCOS or idiopathic hyperandrogenismEarly, gradual hirsutism; acne, alopecia, or menstrual irregularity may coexist. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentWileySociety for Endocrinology Clinical Practice Guideline for the ...WileyApproach to androgen excess in women: Clinical and biochemical ...Assess biochemical hyperandrogenism as indicated, exclude key secondary causes, and treat symptoms that distress the patient. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentWolters KluwerPrevalence of Congenital Adrenal Hyperplasia in... : Indian Journal of Endocrinology and Metabolism
Nonclassic congenital adrenal hyperplasiaInsidious onset around puberty; increased 17-hydroxyprogesterone. WileySociety for Endocrinology Clinical Practice Guideline for the ...Use morning follicular-phase 17-hydroxyprogesterone and stimulation testing when basal value exceeds 5 l/L. WileySociety for Endocrinology Clinical Practice Guideline for the ...
Adrenal or ovarian androgen-secreting neoplasiaLate onset, rapid progression, or virilization. WileySociety for Endocrinology Clinical Practice Guideline for the ...Oxford AcademicAndrogen-Secreting Adrenal Adenoma in a Postmenopausal ...Oxford AcademicApproach to Investigation of Hyperandrogenism in a ...Urgent referral to an experienced center for source-directed evaluation. WileySociety for Endocrinology Clinical Practice Guideline for the ...
Other endocrinopathyCushing syndrome features, severe insulin resistance, or findings suggestive of hypothyroidism, hyperprolactinemia, or acromegaly. WileySociety for Endocrinology Clinical Practice Guideline for the ...Wolters KluwerPrevalence of Congenital Adrenal Hyperplasia in... : Indian Journal of Endocrinology and MetabolismOrder syndrome-directed testing rather than repeating only androgen assays. WileySociety for Endocrinology Clinical Practice Guideline for the ...Wolters KluwerPrevalence of Congenital Adrenal Hyperplasia in... : Indian Journal of Endocrinology and Metabolism

Treatment

Treat distressing hair growth while etiologic evaluation proceeds

Management should reflect patient priorities, pregnancy potential, disease severity, and the underlying endocrine diagnosis.

Determine whether treatment is wanted before prescribing medication: in adolescents with hyperandrogenic symptoms, therapy is indicated when acne or hirsutism is distressing to the patient. Pair medical treatment with a hair-removal method selected by the patient, including electrolysis or laser hair removal; eflornithine hydrochloride 13.9% topical cream may help reduce unwanted facial hair. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentCochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane Library

Oral contraceptive therapy is a longstanding hormonal-suppression option for menstrual irregularity and hirsutism in PCOS, acting in part through suppression of ovarian androgen production. For more severe hirsutism, spironolactone can be added to oral-contraceptive therapy, with closer monitoring for adverse effects than with other options. WileyClinical management of PCOS - Tan - Obstetrics and GynecologyWileyThe long term health consequences of polycystic ovary syndromeCochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane Library

Antiandrogens are effective for hirsutism, but selection requires attention to pregnancy risk and contraindications. Spironolactone 100 mg/day has been reported to be more effective than finasteride 5 mg/day for hyperandrogenic hirsutism. Spironolactone is contraindicated in pregnancy, and potassium monitoring is particularly relevant in patients with kidney disease or excessive potassium intake. WileyMedical treatment of hirsutism - Blume‐Peytavi - 2008cdn clinicaltrials[PDF] Metabolic and Neuro-Endocrine Effect of ... - ClinicalTrials.govOxford AcademicAntiandrogens for the Treatment of Hirsutism: A Systematic ...

Symptom-directed treatment options for hirsutism. WileyMedical treatment of hirsutism - Blume‐Peytavi - 2008WileyClinical management of PCOS - Tan - Obstetrics and GynecologyWileyThe long term health consequences of polycystic ovary syndromeCochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane Librarycdn clinicaltrials[PDF] Metabolic and Neuro-Endocrine Effect of ... - ClinicalTrials.govOxford AcademicAntiandrogens for the Treatment of Hirsutism: A Systematic ...
OptionBest useKey limitation or monitoring
Laser hair removal or electrolysisPatient-desired direct reduction of unwanted terminal hair. CochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane LibraryDoes not replace evaluation for clinically significant androgen excess. WileySociety for Endocrinology Clinical Practice Guideline for the ...CochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane Library
Eflornithine hydrochloride 13.9% topical creamAdjunct for unwanted facial hair. CochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane LibraryUse as symptom management; evaluate systemic hyperandrogenism when indicated. CochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane Library
Oral contraceptive therapyHormonal suppression for PCOS-associated menstrual irregularity and hirsutism. WileyClinical management of PCOS - Tan - Obstetrics and GynecologyWileyThe long term health consequences of polycystic ovary syndromeSelect according to usual contraceptive safety assessment and patient goals; the cited literature describes ovarian androgen suppression. WileyThe long term health consequences of polycystic ovary syndrome
SpironolactoneMore severe hirsutism, often added to oral-contraceptive therapy. CochraneInterventions for hirsutism (excluding laser and photoepilation therapy alone) - van Zuuren, EJ - 2015 | Cochrane LibraryContraindicated in pregnancy; consider potassium monitoring with kidney disease or excessive potassium intake. cdn clinicaltrials[PDF] Metabolic and Neuro-Endocrine Effect of ... - ClinicalTrials.gov
FinasterideAntiandrogen alternative; studied at 5 mg/day in a comparison with spironolactone. WileyMedical treatment of hirsutism - Blume‐Peytavi - 2008Spironolactone 100 mg/day was more effective in that cited comparison. WileyMedical treatment of hirsutism - Blume‐Peytavi - 2008

Medication selection and follow-up

When choosing spironolactone, review renal disease, dietary potassium exposure, concurrent potassium-raising drugs, and pregnancy status before initiation. The cited evidence specifically identifies kidney disease and excessive potassium intake as settings in which potassium monitoring is relevant. cdn clinicaltrials[PDF] Metabolic and Neuro-Endocrine Effect of ... - ClinicalTrials.gov

Population exceptions

Modify the diagnostic threshold in adolescents and postmenopausal patients

Age and reproductive stage change the pretest probability and interpretation of persistent androgen excess.

In adolescents, physiologic pubertal hyperandrogenism, idiopathic hyperandrogenism, and PCOS can overlap clinically. Obtain total testosterone, free testosterone, or both when biochemical confirmation is needed, screen for nonclassic CAH with 17-hydroxyprogesterone, and use longitudinal evaluation when PCOS remains uncertain. Do not withhold symptomatic treatment solely because diagnostic labeling is still evolving. Wolters KluwerScreening and Management of the Hyperandrogenic Adolescent

In postmenopausal patients, new androgen excess deserves a lower threshold for source-directed evaluation because ovarian and adrenal etiologies both occur and adrenal androgen-secreting adenomas, although exceptionally rare, have been reported. Document the modified Ferriman-Gallwey score and prioritize the tempo of new or worsening virilization. Oxford AcademicAndrogen-Secreting Adrenal Adenoma in a Postmenopausal ...Oxford AcademicApproach to Investigation of Hyperandrogenism in a ...Oxford Academicinvestigation of postmenopausal androgen excess | The ...

Age-specific decisions in hirsutism evaluation. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentOxford AcademicAndrogen-Secreting Adrenal Adenoma in a Postmenopausal ...Oxford AcademicApproach to Investigation of Hyperandrogenism in a ...Oxford Academicinvestigation of postmenopausal androgen excess | The ...
PopulationInterpretive issueAction
AdolescentPubertal physiology, idiopathic hyperandrogenism, and evolving PCOS may overlap. Wolters KluwerScreening and Management of the Hyperandrogenic AdolescentMeasure testosterone as indicated, screen for nonclassic CAH with 17-hydroxyprogesterone, and follow longitudinally when PCOS remains uncertain. Wolters KluwerScreening and Management of the Hyperandrogenic Adolescent
Premenopausal adultPCOS is the most common hyperandrogenic disorder associated with hirsutism. Oxford AcademicEvaluation and Treatment of Hirsutism in Premenopausal ...Use tempo, menstrual pattern, androgen testing, and 17-hydroxyprogesterone to distinguish PCOS from secondary causes. BMJFifteen-minute consultation: Approach to the adolescent presenting with hirsutism | ADC Education & Practice EditionWileySociety for Endocrinology Clinical Practice Guideline for the ...Wolters KluwerPrevalence of Congenital Adrenal Hyperplasia in... : Indian Journal of Endocrinology and Metabolism
Postmenopausal patientOvarian and adrenal sources of androgen excess must both be considered. Oxford AcademicApproach to Investigation of Hyperandrogenism in a ...Expedite evaluation for new, progressive, or virilizing androgen excess. WileySociety for Endocrinology Clinical Practice Guideline for the ...Oxford AcademicAndrogen-Secreting Adrenal Adenoma in a Postmenopausal ...Oxford AcademicApproach to Investigation of Hyperandrogenism in a ...

References

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