2

Let's clear up the terms first... Menstruation is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. Only humans and animals with a uterus can menstruate and reptiles do not have a uterus. Premenstrual syndrome refers to emotional and physical symptoms that regularly occur in the one to two weeks before ...


Only top voted, non community-wiki answers of a minimum length are eligible