1. Health



Updated January 11, 2010


Amenorrhea is the lack of a menstrual period. A woman may not get her period for an array of reasons. There are two types of amenorrhea, primary and secondary.

Primary amenorrhea occurs when a woman does not get her first menstrual period before the age of 16 and is usually a result of physiological or endocrine disorders.

Secondary amenorrhea occurs when a woman with previously normal cycles stops getting her period. Causes include menopause, chronic malnourishment as a result of poverty or anorexia, strenuous exercise and extreme stress.

Whenever a woman’s period stops suddenly or unexpectedly for a prolonged period of time (not related to pregnancy), she should visit her doctor.

  1. About.com
  2. Health
  3. PCOS
  4. Glossary
  5. Amenorrhea - Definition of Amenorrhea

©2014 About.com. All rights reserved.

We comply with the HONcode standard
for trustworthy health
information: verify here.