Some women, before each period, their body releases precise signals such as breast tenderness, a feeling of lower abdomen and emotional irritability, which are also known as PMS. What are the signs that precede the onset of menstruation? The following 10 symptoms are common in clinical practice: 1. Physical weakness, dizziness, headache, and uncoordinated movement; 2. Breast swelling and pain, or breasts become sensitive and painful to touch. This is due to the hyperplasia of the milk ducts, the growth of breast lobules and alveoli due to the increase of estrogen and progesterone levels in the body before menstruation. 3. Nausea, vomiting, slight distension and pain in the small abdomen, a feeling of falling, constipation, etc. Among them, the small abdominal distension is mainly due to the pelvic cavity being in a congested state before the menstrual flow. 4. Swelling of fingers in the morning, swelling of lower limbs in the afternoon, back pain, etc. 5. Weight gain, which is usually transient, is also due to changes in hormone levels in the body. Usually after the end of menstruation, the weight gradually returns to normal. 6.Drowsiness. This is mainly due to the change of hormone level in the body, which stimulates the plant nerve function of the brain. If you have the symptoms of anemia, it will aggravate the drowsiness before and during menstruation. 7. Acne on the face. This is due to the increase in the level of progesterone in the body when menstruation is approaching, which in turn causes excessive oil secretion on the face, resulting in acne on the face. 8.Significant increase in vaginal secretions and leucorrhea. Before the onset of menstruation, the pelvic cavity will be heavily engorged with blood, and the cervix and vagina will also experience an increase in blood flow. 9. Lack of concentration and forgetfulness. Some people may also have problems such as low work and study efficiency and memory loss, which seriously affect normal work, life and interpersonal relationships. 10.Emotional irritability, irritability, melancholy, anxiety and depression, etc. In serious cases, people are reluctant to pay attention to others, and even reluctant to get up and go out to meet people. This is also caused by fluctuations in hormone levels. It is believed that the occurrence of PMS is related to the fluctuation of hormone levels and abnormalities of neurotransmitters in the body. The symptoms usually appear 1~2 weeks before the onset of menstruation and gradually ease after the onset of menstruation until they finally disappear. If a woman has any of the above signs before her period, it means that her period is about to visit, and if the symptoms are not serious, you can observe them for a while. If the symptoms are more serious, you can take short-acting oral contraceptives to control the changes in hormone levels or use drugs to relieve anxiety and depression under the guidance of a doctor. Warm tips: 1. Not every woman will have the above signs before her period, it also varies from person to person and is mainly related to her personal constitution. 2. It is recommended that women pay attention to keeping warm and avoiding cold before their menstrual period, so as not to cause dysmenorrhea. In addition, they should also pay attention to keep their mood relaxed, avoid straining, keep their vulva clean and hygienic, change their underwear regularly, etc. References: [1] An LB, Lu H. Obstetrics and gynecology nursing. 6th edition [M]. Beijing. People’s Health Publishing House.2017.