Polymenorrhea is a menstrual disorder, meaning that there is an abnormal pattern of the menstrual cycle. In case of Polymenorrhea, the menstrual cycles are less than 21 days long.
- Newton Long W. Chapter 173 – Abnormal Vaginal Bleeding. Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition. https://www.ncbi.nlm.nih.gov/books/NBK282/
- NHS UK. Period problems. https://www.nhs.uk/conditions/periods/period-problems/ (accessed 7. August 2020)