How does follicular atrophy happen?

Follicle atrophy can be seen in unruptured follicle luteinization syndrome, which refers to follicle maturity of more than 18mm, LH peak performance, but the follicle does not rupture, eggs can not be discharged, luteinized atrophy in the follicle. It is difficult to distinguish from normal ovulation period in clinical manifestation, which is one of the causes of infertility. It is a disease of ovulation dysfunction with an incidence rate of about 5%-10%. The cause of the disease is not clear, and most of them think that it is related to central regulatory disorders, local disorders, mental and psychological factors. Clinical findings show that endometriosis, hyperprolactinemia, hypothalamic gonadotropin, clomiphene, intrauterine adhesions, and the occurrence of luteinized syndrome of unruptured follicles increase.