Cold face red face hot may be fever, facial capillary expansion caused by, there may be infectious urticaria. 1. When you have a cold, there can be a rise in body temperature, capillary expansion of the face, accelerated blood circulation, microcirculation open, local congestion, so the local redness. At the same time, the body temperature rises, the temperature of the face also rises, resulting in a hot face. 2. Infectious urticaria is caused by a variety of bacterial, viral, fungal and other microbial infections caused by urticaria, before the onset of the upper respiratory tract infection can be symptoms, such as fever, sore throat, sneezing, sneezing and other discomforts, lesions are manifested as flaky edematous erythema, wind, accompanied by itching, which can be manifested as a facial redness and burning. Cold face red and hot, you can measure the body temperature to see if the fever, go to the hospital in time to avoid delaying the condition.