High follicle stimulating hormone is commonly seen in the following conditions: First, in patients with primary amenorrhea, follicle stimulating hormone is high due to poor ovarian development. Second, patients with primary hypogonadism. Third, patients with early anterior pituitary hyperfunction. Fourth, patients who use ovulation-promoting drugs, such as clomiphene or urotropin, clinically for ovulation promotion. Patients often have the possibility of clinically high follicle stimulating hormone. Fifth, because some radioactive treatments, such as radiation therapy for pelvic tumors, can also cause follicle stimulating hormone increase if the ovaries are not sufficiently damaged and protected, so the cause of follicle stimulating hormone increase must be investigated.