Encyclopedia > List of rare diseases starting with O

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List of rare diseases starting with O

This list of rare diseases was originally taken from the NIH public domain resource at http://ord.aspensys.com/diseases.asp .

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Menstruation

... days long, but it can range from 21 to 35 days. It is controlled by hormones. By convention, the onset of menstrual bleeding (menstruation or menses) marks the beginning ...