ABSTRACT
Oligomenorrhoea is considered that the normal menstrual cycle has an upper limit of 35 days. The proliferative phase, that is, the time during which the follicle develops, is the variable part of the cycle. The secretory or luteal phase is the time from ovulation to menstruation, which is usually constant at 14 days. Cycles of 6 weeks’ duration seem to show no difference from normal-length cycles in regards to follicular and hormone development. There are several conditions that lead to oligomenorrhoea, and these range from normal conditions to the same conditions that cause amenorrhoea. Some common causes are: polycystic ovarian syndrome; a prolonged proliferative phase, associated with ovulatory oligomenorrhoea; prolactinomas and other endocrine problems; and weight related, either low or very high body mass indexes. Clinically, oligomenorrhoea should be considered in the same way as amenorrhoea for the purpose of investigations and further management.
