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Syndrome reference sheet
Generated 13 Oct 2026
Endocrinology · Endocrinology / Reproductive endocrinology Polycystic ovary syndrome
Also known as: PCOS; Stein–Leventhal syndrome
Hyperandrogenism, ovulatory dysfunction and polycystic ovarian morphology.
- Medical specialty
- Endocrinology
- Subspecialty
- Endocrinology / Reproductive endocrinology
- Sex & age distribution
- Male: not applicable; Female: affected only; Children: yes, adolescents; also premature adrenarche in girls
- Gene(s) involved
- DENND1A, ERBB4, FBN3, FSHR, INSR, LHCGR, THADA, YAP1
Etiology & mechanism
Insulin resistance, increased LH pulsatility and ovarian androgen excess; polygenic.
Gene(s) involved (8)
DENND1AERBB4FBN3FSHRINSRLHCGRTHADAYAP1
Symptoms & signs (10)
acanthosis nigricansacneamenorrheahirsutisminfertilityinsulin resistanceirregular mensesobesitypolycystic ovariesscalp hair loss