Absence of menses for an interval of time equivalent to a total of more than (or equal to) 3 previous cycles or 6 months.

Absence of menses for three months or more.

The absence of menses in a female individual who has achieved reproductive age.

The absence of menses in a woman who has achieved reproductive age.

A disorder characterized by the abnormal absence of menses for at least three consecutive menstrual cycles

Amenorrhea (the absence of menstruation) can be primary or secondary. Primary amenorrhea is failure of menses to occur by age 15 years in patients with normal growth and secondary sexual characteristics. However, absence of any breast development by age 13 should prompt evaluation for primary amenorrhea.

Amenorrhea is the absence of menstrual bleeding. Amenorrhea is a normal feature in prepubertal, pregnant, and postmenopausal females.

Amenorrhea (uh-men-o-REE-uh) is the absence of menstruation - one or more missed menstrual periods. Women who have missed at least three menstrual periods in a row have amenorrhea, as do girls who haven't begun menstruation by age 15.

Amenorrhea, failure to menstruate. Menstruation is the normal cyclic bleeding from the uterus in the female reproductive tract that occurs at approximately four-week intervals. Primary amenorrhea is the delay or failure to start menstruating upon reaching the age of 16, while secondary amenorrhea...