athletic amenorrhea

ath·let·ic a·men·or·rhe·a

(ath-let'ik ā-men'ŏr-ē'ă) Irregularities in the menstrual cycle presenting as either oligomenorrhea (35-90 days between menses) or secondary amenorrhea (cessation of menstrual cycles for at least 3 months) caused by intense athletic training or disordered eating behavior.
See also: female athletic triad