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Menstrual synchrony, also called the McClintock effect, [1] or the Wellesley effect, [2] is a contested process whereby women who begin living together in close proximity would experience their menstrual cycle onsets (the onset of menstruation or menses) becoming more synchronized together in time than when previously living apart. "For example ...
Diagram illustrating how the uterus lining builds up and breaks down during the menstrual cycle Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone ...
If there is excessive menstrual and uterine bleeding other than that caused by menstruation, menometrorrhagia (meno = prolonged, metro = time, rrhagia = excessive flow/discharge) may be diagnosed. Causes may be due to abnormal blood clotting, disruption of normal hormonal regulation of periods or disorders of the endometrial lining of the uterus.
Dysmenorrhea, also known as period pain, painful periods or menstrual cramps, is pain during menstruation. [4] [5] [2] Its usual onset occurs around the time that menstruation begins. [1] Symptoms typically last less than three days. [1] The pain is usually in the pelvis or lower abdomen. [1] Other symptoms may include back pain, diarrhea or ...
Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...
Menopause, also known as the climacteric, is the time when menstrual periods permanently stop, marking the end of reproduction. [1] [6] [7] It typically occurs between the ages of 45 and 55, although the exact timing can vary. [8] Menopause is usually a natural change related to a decrease in circulating blood estrogen levels. [3]
Heavy menstrual bleeding (HMB), previously known as menorrhagia or hematomunia, is a menstrual period with excessively heavy flow. It is a type of abnormal uterine bleeding (AUB). [ 1 ] [ 2 ]
Polymenorrhea, also known as frequent periods, frequent menstruation, or frequent menstrual bleeding, is a menstrual disorder in which menstrual cycles are shorter than 21 days in length and hence where menstruation occurs more frequently than usual. [1] [2] [3] Cycles are regular and menstrual flow is normal in the condition. [3]