Self-Diagnosis, Self-Examination and Self-Treatment of Face, Ears, Hands and Feet

The "Huangdi Neijing" contains the five-color diagnosis, that is, the theory of "five raw colors", "five diseased colors" and "five dead colors". It has important practical value and is still used today. Zhang Zhongjing, a physician in the Eastern Han Dynasty, summarized the theories and methods of facial diagnosis in the "Huangdi Neijing" and proposed in "Treatise on Febrile Diseases and Miscellaneous Diseases" that excessive sweating can cause the adverse reaction of sunken forehead. Qian Yi, a physician in the Song Dynasty, proposed in the book "Pediatric Medicine and Syndrome Direct Jue" that one must pay attention to facial expressions and other local diagnostic methods to judge diseases. His discussion of visual diagnosis in children also had a profound impact on later generations. "Inspection and Diagnosis and Compliance with the Classics" written by Wang Hong in the Qing Dynasty not only collected information on inspection and diagnosis in the past dynasties, but also summarized the diagnostic methods for distinguishing the yin and yang of diseases through the changes in the shape and color of the facial features and other parts of the body.