1) Menstrual disorder 
Hypomenorrhea or hypomenorrhoea, also known as short or scanty periods, is extremely light menstrual blood flow. It is the opposite of hypermenorrhea which is more properly called menorrhagia. ==Overview== In some women it may be normal to have less bleeding during menstrual periods. Less blood flow may be genetic and, if enquiries are made, it ma...
(hi″po-men″o-re´ә) diminution of amount or duration of menstruation.
Type: Term Pronunciation: hī′pō-men′ō-rē′ă Definitions: 1. Diminution of the flow or a shortening of the duration of menstruation.
An abnormally light or short menstrual flow. Rather than experiencing a regular period, spotting is typical in an individual with hypomenorrhea. An overactive thyroid function, oral contraception pills and kidney diseases can both cause hypomenorrhea.
hypomenorrhea Diminution (decreasing or reducing) of the flow or a shortening of the duration of menstruation.