The small amount of menstruation last month, this month does not come may be caused by a variety of reasons, common for pregnancy, menopause, endocrine disorders, etc., but also other gynecological diseases, need to be clear judgment, the line of targeted treatment. Common causes and treatment 1, pregnancy: women of childbearing age, if by chance the last month’s menstrual flow is small, and recently have sex, menstruation does not appear when you need to check whether the pregnancy, pregnancy test positive combined with the vaginal ultrasound embryonic buds can be diagnosed. After determining the pregnancy should strengthen the nutrition, on time pregnancy test; 2, menopause: generally about 45 years old women began to enter the perimenopause, menstrual flow gradually reduced until amenorrhea, generally do not need special treatment, timely adjustment of the mentality and dietary structure can be; 3, endocrine disorders: mental stress, emotional instability, excessive weight loss, etc. can lead to functional endocrine dysfunction, estrogen, menstruation, and even reduced Not come, can be psychological intervention to adjust the mentality, intake of adequate nutrition, to ensure good health. Organic endocrine disorders, such as hypothyroidism, reduced secretion of thyroxine, resulting in scanty menstruation, amenorrhea, loss of appetite, chills, etc., which can be determined by checking the levels of total thyroxine and thyroid stimulating hormone in the blood, and can be supplemented to alleviate the symptoms; 4. Gynecological disorders: for example, polycystic ovary syndrome, which is believed to be related to genetics and environmental factors, and manifests itself in menstrual abnormality, hirsutism, acne, infertility, etc., and can be treated with oral contraceptives. etc. They can be treated with oral short-acting contraceptives, spironolactone, metformin and other medications. Precautions During menstruation, try not to eat spicy and stimulating things and cold food; prohibit sexual intercourse to avoid cross-infection; pay attention to the warmth of the abdomen to avoid getting cold.