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Absent menstrual periods - primary

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Primary amenorrhea
Primary amenorrhea is the absence of the menstrual period by the age of 16. Treatment of amenorrhea may range from hormonal supplementation for developmental abnormalities of the reproductive system to surgery for tumors of the pituitary.
Normal uterine anatomy (cut section)
The uterus is a muscular organ with thick walls, two upper openings to the fallopian tubes and an inferior opening to the vagina.
Secondary amenorrhea
Secondary amenorrhea is the cessation of menstrual flow for a period of 6 months or more in the absence of pregnancy, breastfeeding or menopause. Extreme weight gain or loss, certain medications, as well as anxiety can be the root cause of amenorrhea. Treatment can range from behavior modification for excessive exercise to medication to surgery in the presence of disease.
Last reviewed April 16, 2024 by John D. Jacobson, MD, Professor Emeritus, Department of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team..

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