Disorders of Cycle Length
Polymenorrhea is the medical term for cycles with intervals of 21 days or fewer.
Irregular menstruation is where there is variation in menstrual cycle length of more than approximately eight days for a woman. The term metrorrhagia is often used for irregular menstruation that occurs between the expected menstrual periods.
Oligomenorrhea is the medical term for infrequent, often light menstrual periods (intervals exceeding 35 days).
Amenorrhea is the absence of a menstrual period in a woman of reproductive age. Physiologic states of amenorrhoea are seen during pregnancy and lactation (breastfeeding). Outside of the reproductive years there is absence of menses during childhood and after menopause.
Read more about this topic: Menstrual Disorder
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