Why is my aunt's blood black?

In the menstrual period, there are many reasons why menstrual blood shows black. It is caused by factors such as endometriosis or cold in the abdomen. If it shows black menstrual blood at the beginning or end of menstruation, there is no dysmenorrhea symptom. This is normal. If the aunt's blood color is black with dysmenorrhea, it is caused by cold invasion and menstrual blood stasis. At this time, you can use brown sugar to boil water and drink to relieve menstrual blood black. During menstruation, small abdomen should pay attention to keep warm, prevent cold, can not eat raw and cold food, diet can be light, eat some easy to digest and rich in vitamins and high-quality protein food, drink warm boiled water, do not eat garlic, fennel, pepper and other irritating food.