What is the reason for normal menstruation without ovulation and having children?

Patient's question:

The hospital in our town for vaginitis

Doctor's answer:

Factors causing ovulatory dysfunction include: central nervous system anovulation; hypothalamic anovulation; pituitary anovulation; ovarian anovulation; polycystic ovary syndrome; luteinized unruptured follicle syndrome; others: endocrine disorders outside the gonads, such as thyroid and adrenal cortex dysfunction, as well as some systemic diseases like severe malnutrition, can affect the regulation of ovarian function, leading to ovulatory dysfunction.