What is the term for the cessation of menstrual periods due to pregnancy?

Amenorrhea is the correct term for the cessation of menstrual periods due to pregnancy. During pregnancy, hormonal changes, particularly the increase of progesterone and estrogen, suppress ovulation and the menstrual cycle, leading to the absence of menstruation. This is a normal physiological adaptation that allows for the development of the fetus.

The other terms represent different conditions associated with menstrual cycles. A disruptive cycle refers to irregularities in the menstrual cycle but does not specifically denote a complete cessation of periods. Menorrhagia is characterized by excessively heavy or prolonged menstrual bleeding, and dysmenorrhea refers to painful menstruation. Thus, none of these terms correctly describe the condition of missing periods due to pregnancy as effectively as amenorrhea does.