Patient's question:
What are the reasons for dark-colored blood in the last few days of menstruation, especially on the last day?Doctor's answer:
Hello! The normal age for menarche is between 11 and 16 years old. The menstrual blood is dark red, non-coagulative, and the volume is about 50 milliliters. Exceeding 80 milliliters is considered excessive menstrual bleeding, and blood clots may appear when the bleeding is heavy. Dark menstrual blood is due to qi stagnation and blood stasis, where the blood accumulates in the uterus for a long time, which is related to dysmenorrhea. The menstrual period lasts for 2 to 8 days, and the cycle is 21 to 35 days. Generally, a delay or advancement of one week in the menstrual period is considered normal.