What are the reasons for delayed menstruation without having sex?

Excessive pressure, polycystic ovary syndrome, pituitary tumors and so on can all lead to delayed menstruation without sex, patients should consult a doctor in time to clarify the cause of the disease.
1. Excessive stress: some adolescent girls’ hypothalamus-pituitary-ovarian axis is still not well developed, and the ability of the regulator is poor, when they are subjected to stress such as emotional and academic tensions, there may be delayed menstruation, usually without special treatment.
2. Polycystic ovary syndrome: a common reproductive endocrine metabolic disease, patients will have delayed menstruation, scanty menstruation, infertility, hirsutism and other symptoms. Patients can lose weight moderately through exercise and take drugs such as dextroprogesterone and dexamethasone under the guidance of doctors.
3. Pituitary tumor: Neuroendocrine tumor originated from pituitary gland, patients will have headache, vision loss and symptoms such as delayed menstruation, irregular menstruation and so on, patients should under the guidance of doctors for surgical removal.
When there are symptoms of menstrual disorders such as delayed menstruation, patients should consult doctor in time to clarify the cause of the disease.