Cheeks that are hot and red in the afternoon can be caused by environmental factors and infectious factors. 1. Environmental factors: usually due to the high temperature of the environment, the environment is more confined and other factors, will cause vasodilatation, so there will be the phenomenon of afternoon cheeks will be hot and red. 2. Infectious factors: for example, people with tuberculosis usually have a body temperature of no more than 38°C, and the body temperature can gradually return to normal without antipyretic treatment. According to the different parts of the tuberculosis, including bone tuberculosis, pulmonary tuberculosis or intestinal tuberculosis, the clinical manifestations of each disease are different, and it is recommended to go to the regular hospital in time to do the relevant examination to make a clear diagnosis, and give the appropriate treatment. If your cheeks are hot and red every afternoon for a long time, you must seek medical treatment in time to avoid delaying your condition.