Medical News Today: What causes an absence of menstruation?

An absence of menstruation, also called amenorrhea, means either that a person has not started having periods by the age of 16 or that someone who has started menstruating has missed three periods in a row. In this article, learn about 13 causes of amenorrhea, possible additional symptoms, and when to see a doctor.
Source: Health News from Medical News Today - Category: Consumer Health News Tags: Women's Health / Gynecology Source Type: news