Amenorrhea
Amenorrhea:
Primary amenorrhea is defined as the failure of menses to occur by age 16 years. Secondary amenorrhea is defined as the cessation of menses once they have begun. Oligomenorrhea is defined as menses occurring at intervals longer than 35 days. No consensus has been reached regarding the point at which oligomenorrhea becomes amenorrhea. Any young woman without menstrual cycles or a woman aged 20-40 years who experiences loss of an established regular menstrual pattern should have an evaluation for amenorrha. Amenorrhea can be due to pregnancy, anatomic defects of the outflow tract, ovarian disorders, and pituitary or hypothalamic disorders. Your reproductive endocrinologist is an expert at evaluating primary and secondary amenorrhea.
