Very little flow (less than 10 ml) is called hypomenorrhea.

The history of a pregnancy event followed by a D&C leading to secondary amenorrhea or hypomenorrhea is typical.

Hypomenorrhea or hypomenorrhoea, also known as short or scanty periods, is extremely light menstrual blood flow.

Nervous and emotional: Psychogenic factors such as stress due to exams, or excessive excitement about an upcoming event may cause hypomenorrhea.

Despite these common causes, hypomenorrhea is still technically an abnormality of the menstrual flow, and other underlying medical problems should be ruled out by a doctor.

Exceptionally heavy bleeding during periods is termed menorrhagia or hypermenorrhea, while light bleeding is called hypomenorrhea.

Often, patients experience secondary menstrual irregularities characterized by a decrease in flow and duration of bleeding (amenorrhea, hypomenorrhea, or oligomenorrhea) and become infertile.

One cause of hypomenorrhea is Asherman's syndrome (intrauterine adhesions), of which hypomenorrhea (or amenorrhea) may be the only apparent sign.

Hypomenorrhea or hypomenorrhoea, also known as short or scanty periods, is extremely light menstrual blood flow.

Anovulation due to a low thyroid hormone level, high prolactin level, high insulin level, high androgen level and problems with other hormone can also cause scanty periods.