What Is PCOS and Why the Shift to PMOS? The old name, Polycystic Ovary Syndrome, focused almost entirely on the ovaries. This impacted millions of women, leading to delayed diagnoses (sometimes taking up to 12 years!) because they didn't fit the rigid box of having "cysts on an ultrasound." The new name, PMOS, breaks down the true nature of the condition: Polyendocrine: It affects multiple hormones across your entire body—not just your reproductive system. Metabolic: It is d