Abstract
Amenorrhoea is defined as absence of menstruation in women of reproductive age. Primary amenorrhoea is a failure to start menstruation by the age of 13 years without secondary sexual characteristics or by the age of 15 years with normal secondary sexual characteristics. Secondary amenorrhoea is the absence of menstruation for 6 months in a woman with normal prior menstruation. Secondary amenorrhea is more common type, with a prevalence of between 3 and 4%. This compares with a prevalence of 0.3% for those with primary amenorrhea.
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