Polycystic ovary syndrome (PCOS) has been officially renamed polyendocrine metabolic ovarian syndrome (PMOS) as of May 12, 2026, marking a landmark shift in women’s health naming following an international consensus among 56 academic, clinical, and patient organizations. The renaming resulted from global surveys with responses from over 10,000 people with PCOS and health professionals worldwide, led by Australian researcher Dr. Helena Teede at Monash University.
The old name was problematic on two counts: the “cysts” are not actual cysts but immature follicles containing undeveloped eggs, often called a “string of pearls” on ultrasound. Additionally, the condition is not primarily ovarian—it is a multisystem hormonal and metabolic disorder affecting the reproductive system, skin, metabolism, and brain. PMOS affects 1 in 8 women and people with ovaries and impacts an estimated 170 million people globally.
The condition presents with highly variable symptoms including irregular periods, weight gain or difficulty losing weight, acne, excessive facial and body hair, male pattern baldness, difficulty conceiving, and insulin resistance. Long-term risks include type 2 diabetes, cardiovascular disease, and endometrial cancer. In the U.S., doctors diagnose PMOS using the Rotterdam criteria, requiring two out of three conditions: irregular or absent ovulation, signs of elevated male hormones, or ultrasound findings showing enlarged polycystic ovaries with greater than 12 small follicles on each ovary.
The NIH first flagged the inaccuracy of the PCOS name in 2012, yet the process took over a decade. Treatment approaches vary based on individual circumstances and may include lifestyle changes, birth control pills, metformin, spironolactone, or fertility interventions like ovulation induction, IUI, or IVF. The name change is expected to prompt earlier diagnosis and more holistic, whole-body care, though clinicians globally will need time to adopt the new terminology across disease classification systems, medical education, and patient-facing materials.
This article is an AI-assisted summary. All facts and figures are drawn from the original report: https://www.huffpost.com/entry/pcos-pmos-name-change_l_6a034053e4b0b1a48de95317