Premenstrual Syndrome
Premenstrual syndrome, commonly known as PMS, typically recurs about one to two weeks before the menstrual period and disappears once or shortly after the period begins. Practically every woman experiences at least one PMS symptom sometime in her life. Specific Symptoms vary from woman to woman, and some 5 to 10 percent of women experience symptoms severe enough for them to seek medical help. Women most often affected by premenstrual syndrome are those who have experienced a significant hormonal change, as may happen after childbirth, miscarriage, abortion, or tubal ligation. Women who discontinue birth control pills may also notice an increase in PMS symptoms until their hormone balance returns.