What causes black blood during menstruation?

Normal people know that women's menstrual blood is no different from ordinary blood, and its color is dark red. But sometimes, some women will find black blood in their menstrual period, which makes them very nervous and wonder if there is something wrong with their body. So, why does the originally dark red menstrual blood turn black? What does it mean when black blood appears during menstruation?

First, irregular work and rest schedules make women more likely to have too little menstrual flow. Because women are exposed to cold stimulation during menstruation, the blood vessels in the pelvic cavity will continue to contract, further causing less menstrual volume, and in severe cases it can even cause amenorrhea.

Second, black menstruation is caused by qi stagnation and blood stasis, and menstrual blood has been stagnant in the uterus for a long time. There are mainly the following situations where black menstruation will appear: 1. Black menstruation due to qi and blood deficiency: the menstrual cycle is advanced or delayed, the menstrual volume increases or decreases, the menstrual period is prolonged, the color is light, and the texture is thin. Or pain in the lower abdomen, or dizziness, or fatigue, pale or sallow complexion, poor appetite and loose stools. The tongue is light red, and the pulse is thin and weak. 2. Black menstruation due to cold blood: delayed menstruation, small volume, dark color and blood clots. Lower abdominal cold pain, relieved by heat, fear of cold and cold limbs. White tongue coating, deep and tight pulse. Treatment should be warming the meridians and dispersing cold. 3. Black menstruation due to kidney deficiency: irregular menstrual cycle, small volume, light red or dark red color, thin texture. Weak waist and knees, heel pain, dizziness and tinnitus, or cold lower abdomen, or frequent urination at night. The tongue is pale, and the pulse is deep and weak or slow. Treatment should be to tonify the kidney and regulate menstruation.

Third, darker menstrual color may be related to inflammation. In fact, the menstrual blood that comes every month is the blood flowing in the blood vessels in the body, and it should be bright red. However, because menstrual blood is mixed with sloughed endometrial fragments, cervical mucus and vaginal epithelial cells, it looks dark in color and is not as bright red as the blood flowing out of broken skin. There are also some small thin fragments mixed in the menstrual blood. In particular, some people have less menstrual blood, and the color becomes darker as the blood stays in the uterus and vagina for a longer time. Therefore, while paying attention to the color of menstrual blood, you should also pay attention to the menstrual cycle, duration of menstruation, amount of menstruation, and whether you have any discomfort. Darker color of menstrual blood can be seen from blood accumulation in the uterine cavity, or it can be seen from the small amount of menstrual blood that cannot flow out in time and remains in the body for a long time. Close observation is recommended.

From the above text, you should now know why black blood appears during menstruation. Therefore, doctors recommend that female friends avoid drinking cold drinks during menstruation, as this will cause the originally expanded uterus to suddenly contract and reduce the amount of menstruation. Also, you should keep your lower body clean to avoid inflammation.