CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY
Menstrual pain. Woman holding her hands against her abdomen to relieve pain caused by menstruation. Lower abdominal and pelvic pain, known as dysmenorrhoea, may occur before or during a menstrual period. During menstruation, strong uterine contractions cause the menstrual discharge to be expelled. At ovulation, abdominal pain may be felt when an egg is forcibly expelled from an ovary.
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