Follicle stimulating hormone and luteinizing hormone are collectively known as gonadotropins and have the effect of promoting follicle development and maturation. Together with luteinizing hormone, follicle stimulating hormone can also promote the secretion of sex hormones. Increases in follicle stimulating hormone can be seen in primary amenorrhea, primary hypogonadism, early anterior pituitary hyperfunction, testicular spermatocytoma, Turner syndrome, etc. If follicle stimulating hormone appears to be decreased, it is seen in estrogen or progesterone therapy, secondary hypogonadism, Silhan’s syndrome, advanced hypohydrosis, and intake of oral contraceptives, sex hormones, and other medications.