Why does polycystic ovary syndrome cause periods to stop?

When ovulation does not occur, the hormone pattern that normally leads to a period may not develop. The uterine lining can therefore remain in place rather than shed on schedule. A prolonged absence of bleeding can have other explanations, including pregnancy, thyroid or pituitary conditions, major stress, changes in weight, breastfeeding, or medicines, so assessment should look beyond PCOS.

Check whether pregnancy is possible and record when bleeding last occurred. Make a note of pain, discharge, headaches, vision changes, medicines, and other symptoms. A clinician may discuss tests and ways to bring bleeding into a safer regular pattern, based on your health and whether you are trying to conceive.

Book an appointment when periods stop unexpectedly or remain absent. Seek urgent care for severe abdominal pain, fainting, heavy bleeding after a long gap, or pregnancy-related pain or bleeding.

What could be causing the absence of bleeding? Do I need a pregnancy or hormone check? How can we reduce risks from long gaps while considering my fertility plans?