Heat enters the blood chamber, a disease name. It comes from Treatise on Febrile Diseases. It refers to the symptoms of women who are affected by external pathogens during menstruation or after childbirth, and the pathogenic heat invades the blood chamber and fights with the blood. Symptoms include hardness and fullness in the lower abdomen or under the chest and ribs, alternating cold and heat, clear mind during the day, and delirious speech and abnormal consciousness at night. Synopsis of the Golden Chamber has the following record: "Women who have a stroke for seven or eight days have continuous chills and fever, and the attacks are at certain times, and the menstruation just stops. This is heat entering the blood chamber, and the blood must be coagulated, so it is like malaria, and the attacks are at certain times. Xiao Chaihu Decoction is the main treatment." "Women who have typhoid fever and fever, and the menstruation just comes, are clear during the day, and delirious at night, as if seeing ghosts. This is heat entering the blood chamber. If you treat it without violating the stomach qi and the upper two jiaos, it will heal itself." "A woman who has suffered a stroke has a fever and chills, and her period comes at the same time. After seven or eight days, the fever is gone, the pulse is slow, the body is cool, the chest and ribs are full as if knotted, and she is delirious. This is because heat has entered the blood chamber. You should puncture Qimen and drain it according to the actual situation." "For patients with Yangming disease who have blood in their stool and delirium, this is because heat has entered the blood chamber. But if the head sweats, you should puncture Qimen and drain it according to the actual situation. However, those who sweat will recover."