Along the outside edge of the ovary, several tiny fluid sacs form in people with PCOS. These are known as cysts. Immature eggs are present in the tiny cysts filled with fluid called follicles. These follicles don’t consistently release eggs.

In women between the ages of 17 and 45, the prevalence of PCOS is thought to range between 5.5% and 12.6% globally. Depending on the diagnostic criteria applied, prevalence estimates for India range from 8.2% to 22.5%. One of the main reasons why women struggle with infertility is PCOS.