Patient's question:
NoDoctor's answer:
The normal size of a mature follicle is 18-25mm, and ovulation cannot occur normally if it is below or above this standard. The factors that can cause ovulation disorders include: central nervous system anovulation; hypothalamic anovulation; pituitary anovulation; ovarian anovulation; polycystic ovary syndrome; luteinized unruptured follicle syndrome.