A hot face and cold body is what Chinese medicine calls yang deficiency. It may be caused by yin deficiency and fire exuberance (deficiency of yin essence in the body, resulting in hyperactive fire), typhoid fever (a disease in which fever is caused by feeling cold), cold and flu, and other reasons. 1. Yin deficiency and exuberant fire: Yin deficiency and exuberant fire is usually caused by insufficient qi and blood, poor blood circulation, which leads to heat in the face and cold in the body, and often occurs at night while sleeping. 2. Cold and flu: When cold and flu occurs, patients often show symptoms of cold (fear of cold) and fever, and at this time, the symptoms of face fever and body cold can occur. When there is fever and cold, you should go to the hospital in time for detailed diagnosis, and treat the symptoms according to the condition under the guidance of the doctor, rather than blindly dispose of it by yourself, so as not to delay the condition.