Britannica AI Icon

primary amenorrhea

physical disorder

Quick Summary

Primary amenorrhea is the failure to start menstruating by age 16. It is not a disease itself but indicates an imbalance in the reproductive system, involving the hypothalamus, pituitary gland, ovaries, and uterus.1

Causes can stem from:
* Hypothalamic issues: Emotional shock, anxiety, or certain medications can disrupt hypothalamic function.1
* Pituitary problems: Tumors, systemic diseases, or eating disorders like anorexia nervosa can affect pituitary function.1
* Ovarian disturbances: Conditions such as polycystic ovarian syndrome or hormonal imbalances can lead to primary amenorrhea.1

In some rare cases, primary amenorrhea is linked to chromosomal abnormalities like Turner syndrome, where ovaries may not develop properly. Other physical causes include vaginal atresia, an obstruction that prevents menstrual flow. Treatment focuses on addressing the underlying cause, often with hormone therapy.21

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.