The lack of periods is known as amenorrhoea, and can be determined if:
- A girl at 16 years old still does not get her period.
- A woman (who is not pregnant) does not get her period for at least three months.
Amenorrhoea is also an indication of irregular periods. Too much exercise, eating disorders, physical or psychological stress, tumors, and hormonal problems can cause amenorrhoea, especially for women who have polycystic ovary syndrome (PCOS). Although amenorrhoea is not a disease, it might still be best to consult your healthcare provider if you feel that you may have amenorrhea. With proper medications and lifestyle changes, it can be treated.