Women with amenorrhea should first undergo a blood and urine HCG test to rule out the possibility of pregnancy. After excluding pregnancy, it is generally necessary to check the female sex hormone levels and thyroid function. Sometimes, specific diseases such as polycystic ovary syndrome, hyperprolactinemia, and premature ovarian failure can cause amenorrhea, and these specific diseases should be treated accordingly to induce menstruation. For polycystic ovary syndrome, treatment often involves the use of oral contraceptives to induce menstruation; for hyperprolactinemia, treatment typically involves the use of bromocriptine; for premature ovarian failure, estrogen-progestogen cycle replacement is usually prescribed. (Please use medications under the guidance of a doctor.)