Oligoamenorrhea

More frequent menstruation

Oligoamenorrhea, also known as irregular infrequent periods or irregular infrequent menstrual bleeding, is a collective term to refer to both oligomenorrhea and amenorrhea. It is a menstrual disorder in which menstrual bleeding occurs on an infrequent and irregular basis. Menstrual intervals are 37 to 180 days in oligoamenorrhea. Nearly 90% of women with oligoamenorrhea have polycystic ovary syndrome (PCOS).

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