Dictionary > Polymenorrhoea

Polymenorrhoea

Definition
noun
A menstrual cycle disorder experienced by certain women, and is characterized by menstrual cycles with intervals of 21 days or fewer
Supplement
Menstruation is the recurring discharge of blood, cervical mucus, vaginal secretions, and endometrial tissue of a nonpregnant females of humans and other animals (e.g. certain primates, shrews, and bats.1 There are instances though when menstrual period is different from the norm. For instance, polymenorrhoea, oligomenorrhoea, and amenorrhoea are menstrual disorders that are characterized by the disorders of the menstrual cycle length. Polymenorrhoea is the term used to refer to a menstrual cycle disorder wherein the cycles have intervals of 21 days or fewer. In women, the normal interval length (i.e. between the first day of a menstrual period and the first day of the next) is 21 to 45 days in young women, and 21 to 31 days in adults (an average of 28 days).2 In contrast, the menstrual cycle disorder, oligomenorrhoea, pertains to infrequent periods, i.e. intervals exceeding 35 days.
Variant(s):

  • polymenorrhea (US spelling)

See also:

  • menstruation
  • menstrual cycle
  • hypermenorrhea
  • hypomenorrhea
  • oligomenorrhea
  • amenorrhoea
  • Reference(s):

    1 Lopez, K. H. (2013). Human Reproductive Biology. Academic Press. p. 53.

    2 Menstruation. Retrieved from https://en.wikipedia.org/wiki/Menstruation.


    You will also like...

    Origins of Life on Earth
    Origins of Life on Earth

    Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

    Kidneys
    Kidneys and Regulation of Water and Inorganic Ions

    The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..

    Gene Regulation in Eukaryotes
    Gene Regulation in Eukaryotes

    Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....

    New Zealand Flora & Fauna
    Ecology & Biodiversity: New Zealand Flora & Fauna

    New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..

    Body temperature regulation by the hypothalamus
    Temperature Regulation in Animals

    This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..

    Chromosomes X and Y and Sex Determination
    Chromosomes X and Y and Sex Determination

    This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..