How do I know if my acne is hormonal?
No single test or location of breakouts proves acne is "hormonal". The pattern that raises the likelihood in women is persistent or recurring acne on the lower face, jawline and chin, especially if it flares predictably around periods or comes with excess hair growth or irregular cycles. The idea is also supported by the response to anti-androgen treatment: in the SAFA randomized trial of 410 adult women with persistent facial acne, spironolactone 50 mg daily for 6 weeks then 100 mg until week 24 led 82% to report improvement at week 24 versus 63% with placebo, meaning roughly one extra woman benefits for every 5 treated.
Key numbers
- 410 women — SAFA trial size
- 50 mg → 100 mg — Study dose
- 82% vs 63% — Self-reported improvement at week 24
- ≈5 — Number needed to treat for one extra benefit
When are hormone tests needed?
Acne in a woman does not automatically mean ordering a full hormone panel. Looking for an androgen disorder or polycystic ovary syndrome (PCOS) matters more with clearly irregular periods, new or marked excess hair growth, pattern hair loss with signs of excess androgen, or an unusually fast or severe onset. Acne on its own can occur with normal hormone tests.
Is jawline acne alone enough?
No. The AAD mentions the lower face and jawline as a common sign that may respond to hormonal treatment, but it is not a diagnostic test on its own. The menstrual pattern, medicine history and signs of excess androgen matter more than a face map.
Key takeaways
- Breakout location raises the likelihood but does not prove a hormonal cause.
- Cyclical flares plus excess hair or irregular periods increase the value of a hormonal assessment.
- The response to spironolactone takes time; in SAFA the difference was clearer at 24 weeks.
Hormonal Acne in Women: Signs and Treatment