Periods Have Stopped Incidence
Facts about amenorrhea:
- About 2-5 percent of women have episodes of amenorrhea at some time in their life.
Continue to Periods Have Stopped Symptoms
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- Hoffman B, Bradshaw KD. Delayed puberty and amenorrhea. Semin Reprod Med. 2003 Nov;21(4):353-62. 
- Timmreck LS, Reindollar RH. Contemporary issues in primary amenorrhea. Obstet Gynecol Clin North Am. 2003 Jun;30(2):287-302. 
- Van der Wijden C, Kleijnen J, Van den Berk T. Lactational amenorrhea for family planning. Cochrane Database Syst Rev. 2003;(4):CD001329.