What is meant by "amenorrhea"?

Amenorrhea refers specifically to the absence of menstrual periods. It is a condition that can occur in various circumstances, such as pregnancy, breastfeeding, significant weight loss, excessive physical activity, or certain medical conditions and hormonal imbalances. Recognizing amenorrhea is essential in both clinical practice and patient education, as it can be a sign of underlying health issues that may require attention.

In contrast, the onset of menopause signifies the end of a woman's reproductive years and is characterized by the cessation of menstruation, but it is a distinct phase in a woman's life rather than a condition like amenorrhea. Similarly, a delay in the menstrual cycle refers to a situation where menstruation starts later than expected, and irregularity of menstrual cycles pertains to variations in cycle length or flow, which are different from total absence. Thus, "absence of menses" precisely captures the definition of amenorrhea.