Understanding PMOS (formerly PCOS)
Polyendocrine metabolic ovarian syndrome (PMOS) is the new name for the condition previously known as polycystic ovary syndrome (PCOS). You may still see both names in health information and conversations with your care team.
Why are PCOS and PMOS used together?
The name changed on 12 May 2026. Both terms refer to the same condition; the new name does not mean you have a different diagnosis. For current information on assessment and care, see the international evidence-based PMOS guideline from Monash University.
Period tracking and irregular cycles
A period tracker can help you record menstrual cycle dates, missed periods, bleeding, pain, and other symptoms. Keeping a symptom history gives you a record to discuss with a healthcare professional, whether you already have a PMOS / PCOS diagnosis or are asking about changes in your cycle.
Olanna Health supports period and symptom tracking. It cannot diagnose PMOS / PCOS, confirm ovulation, or replace medical advice or treatment. If your periods are persistently irregular, absent, or concerning, speak with a healthcare professional.
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