USMLE Prep - Medical Reference Library

Hirsutism — Evaluation & Treatment

System: Dermatology • Reviewed: Aug 31, 2025 • Step 1Step 2Step 3

Synopsis:

Assess androgen excess and rule out serious causes; most cases due to PCOS. Treat with combined oral contraceptives and antiandrogens (spironolactone) with reliable contraception; add cosmetic hair removal methods.

Key Points

  • Stabilize ABCs; begin targeted evaluation without delaying life-saving therapy.
  • Use system-specific risk tools to guide testing and disposition.
  • Order high-yield tests first; escalate imaging when indicated.
  • Start evidence-based initial therapy and reassess frequently.

Algorithm

  1. Primary survey and vitals; IV access and monitors.
  2. Focused history/physical; identify red flags and likely etiologies.
  3. Order system-appropriate labs and imaging (see Investigations).
  4. Initiate guideline-based empiric therapy (see Pharmacology).
  5. Reassess response; arrange consultation and definitive management.

Clinical Synopsis & Reasoning

For Hirsutism Evaluation Treatment, frame the differential by acuity and pathophysiology, then align diagnostics to the leading hypotheses. Prioritize stabilization while obtaining high‑yield studies such as CBC (Baseline hematology), BMP (Electrolytes/renal). Incorporate bedside imaging and targeted labs to define severity and identify complications; synthesize results with clinical trajectory to refine the working diagnosis and disposition needs.


Treatment Strategy & Disposition

Initiate disease‑directed therapy alongside supportive care, titrating to objective response. Pharmacologic options commonly include Analgesia/Antipyretics. Use validated frameworks (e.g., When to Image) to guide escalation and site of care. Address precipitating factors, de‑escalate empiric therapies with data, and arrange follow‑up for monitoring and risk‑factor modification; admit patients with instability, high risk of deterioration, or needs for close monitoring.


Management Notes

Avoid spironolactone in pregnancy; ensure contraception. Metformin helps metabolic features in PCOS but not hirsutism alone.


Epidemiology / Risk Factors

  • Risk factors vary by condition and patient profile

Investigations

TestRole / RationaleTypical FindingsNotes
CBCBaseline hematologyAbnormal counts
BMPElectrolytes/renalDerangements

When to Image

TriggerAction
Very high testosterone or DHEASPelvic/adrenal imaging
Rapid virilizationUrgent evaluation
Postmenopausal onsetLower threshold to image
PCOS phenotype onlyNo immediate imaging
Hyperprolactinemia signsPituitary workup

Pharmacology

MedicationMechanismOnsetRole in TherapyLimitations
Combined oral contraceptiveSuppress ovarian androgensWeeksFirst-line pharmacologicVTE risk
SpironolactoneAndrogen receptor antagonismWeeksAdjunct/second-lineHyperkalemia; teratogenic—use contraception

Prognosis / Complications

  • Prognosis depends on severity, comorbidities, and timeliness of care

Patient Education / Counseling

  • Explain red flags and when to seek emergent care.
  • Reinforce medication adherence and follow-up plan.

References

  1. Endocrine Society — Hirsutism — Link