What causes scanty menstruation? What factors can cause reduced menstrual flow?

Scanty menstruation is a common menstrual disorder in women, usually characterized by a normal menstrual cycle but a significantly reduced menstrual flow, sometimes even as light spotting. Common causes of scanty menstruation include the following.

Causes of scanty menstruation

1. Some medications can cause scanty menstruation.

Some medications can cause light menstrual flow, such as birth control pills, medications for mental illness, anti-tumor drugs, and medications for treating endometriosis. When using these medications, you should follow your doctor's instructions, take them on time, and stop taking them promptly.

2. Miscarriage can cause scanty menstruation.

Repeated abortions or improper procedures can damage the basal layer of the uterine lining or cause intrauterine adhesions, both of which can lead to scanty menstruation.

3. Ovulation problems can cause scanty menstruation.

Anovulatory dysfunctional uterine bleeding occasionally presents with scanty menstruation and can sometimes be a precursor to anovulatory amenorrhea. Polycystic ovary syndrome (PCOS) can also cause scanty menstruation, often accompanied by delayed menstruation, weight gain, and subsequently amenorrhea. Premature ovarian failure (POF) patients may also initially experience reduced menstrual flow, followed by amenorrhea.

4. Hypopituitarism can cause scanty menstruation.

A decline in pituitary function can affect ovarian estrogen secretion and also reduce endometrial proliferation, resulting in scanty menstruation. It's advisable to have a medical examination to determine whether the problem lies with the ovaries or the pituitary gland.

Women with light menstrual flow are advised to go to the hospital for relevant examinations and timely treatment to avoid affecting their health and even fertility.