This study indicates that recurrence of bleeding is very common in the time immediately after the 12 months of amenorrhea after what is currently defined as the final menstrual period, declining to low frequencies more than 3 years after the final menstrual period.
Irregularity of cycle lengths at the end of the fertile period is common, and is accompanied by an increased inter- and intraindividual variation in the length and heaviness of bleeding episodes, including increased frequency of prolonged bleeding and spotting.
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