Aunt Black, why?

Menstruation (commonly known as menstruation) has many reasons for menstrual blackening, such as qi stagnation and blood stasis will also cause menstrual blackening color, in addition to cold coagulation qi stagnation or qi deficiency caused by poor blood type, will cause menstrual blackening color. For cold, it is necessary to warm yang and dissipate cold. For qi stagnation and blood stasis, it is necessary to regulate qi and activate blood. For qi deficiency and blood stasis, it is necessary to invigorate qi and blood circulation. Specific dialectics need to be seen by clinical professional TCM doctors before giving specific analysis and diagnosis.