Amenorrhea is characterized by a complete lack of menstrual cycles. This may appear as primary amenorrhea, which is the lack of menstruation before age 16. Secondary amenorrhea occurs in women who have had normal menstrual cycles that have stopped for six months or more. A very long list of reasons exists for amenorrhea, and a doctor will run multiple tests to diagnose the cause. Amenorrhea can be treated with drugs and/or surgery. Sometimes amenorrhea can be remedied if you make changes to your lifestyle habits like taking care of your mental health and/or getting to a healthier weight. If you experience the symptoms of amenorrhea, contact a doctor for further advice.