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1 Menstrual cramps are pains felt in the lower abdomen, occurring both before and during a woman's menstrual period. 2  The pain can be slight or sometimes extremely severe. 3  There are two types of painful periods-primary and secondary dysmenorrhea. 4  About 15% of women describe menstrual pain as severe.ast facts on menstrual cramps. Here are some key points about menstrual cramps. More detail and supporting information is in the main article. 1  Menstrual cramps are pains felt in the lower abdomen, occurring both before and during a woman's menstrual period. 2  The pain can be slight or sometimes extremely severe.
Persistent pain after a woman's period has ended is usually a sign that something is wrong. Ovarian cysts may cause menstrual cramps after a period. Irregular ovulation may cause cramping after a menstruation. Cramping menstrual-like pain could also be the result of a recent intrauterine device (IUD) insertion. Women with polycystic ovary syndrome (PCOS) may experience pain following menstruation. A reaction to birth control may cause cramps.