Patient's question:
My menstruation often comes late, and the blood is black. How long does it usually take for irregular black menstrual blood to stop?Doctor's answer:
A normal menstrual cycle is approximately 28 to 30 days long, and the bleeding during menstruation lasts for about three to seven days. It is considered normal if the cycle is delayed or advanced by up to seven days. If you frequently have irregular periods, it may result in a prolonged or shortened cycle, which is referred to as menstrual dysfunction. Normal menstrual blood is dark red in color. If the bleeding is black, it may be caused by qi stagnation and blood stasis. You can supplement your diet with foods rich in collagen, such as fresh milk, eggs, and fish skin. Avoid spicy foods.