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Amenorrhea — the absence of menstruation — can happen during puberty or later in life. Primary amenorrhea describes a condition in which you haven't had any menstrual periods by age 16. Secondary amen... Details >
Bleeding and clotting disorders pose important problems for women because of the relationship of these disorders to reproductive issues. These problems include heavy menstrual bleeding (termed menorrh... Details >
National Center on Birth Defects and Developmental Disabilities