A. Specific pathogenic factors The fundamental reason why warm diseases are different from the external wind-cold nature of the external diseases, as well as from the internal diseases, is that the factors causing warm diseases are not wind-cold, nor only the emotions or internal injuries, but the warm evil, so Ye Tianshi proposed: “the warm evil up to receive, first offend the lungs”. The specificity of warm evil lies in the fact that most of them are externally felt; dry heat (warmth) and damp heat. Warming evil as a pathogenic factor should not be seen entirely as a physical factor of purely natural climate change, but as a specific pathogenic substance in climate change, closely related to modern medicine pathogenic microorganisms (bacteria, viruses, mycoplasma ……). Second, most of the temperature diseases are contagious, epidemic, seasonal and geographical 1, the contagiousness of temperature diseases contagious means that temperature diseases can be spread through various ways in the population. Suwen? The theory of prickly method: “five epidemic of the arrival, all each other dye easy (easy person also move), regardless of the size, the disease symptoms are similar. Wu also can talk about the contagiousness more, “warm epidemic theory” pointed out: “epidemic prevalent, the patients are heavy, the most contagious”. The website of the examination is organized by “the evil is affected by the sky, there is contagious”. The word “heavenly” refers to respiratory infections, and “infections” refers to contact infections, skin and gastrointestinal infections. However, a few warm diseases do not have this feature, or very little contagious, such as pneumonia, heat stroke, so warm diseases are not equal to infectious diseases; many infectious diseases do not belong to the scope of warm diseases, such as rabies, parasitic diseases. 2, the prevalence of warm disease due to infection, spread under certain conditions, spread in a certain range, unfavorable weather, unfavorable environment, unfavorable popularity, such as long drought and flooding, natural disasters, earthquakes. 3, the seasonality of temperature disease mostly has obvious seasonality, so also called temperature disease for the “four seasonal temperature disease”, some temperature disease is limited to a specific season, such as summer temperature – summer; but some four seasons can be seen, and a certain season for more, such as wind temperature, wet temperature. Third, the development of the disease process has a stage The stage of the development of the disease process of warm disease is due to the role of the warm evil, resulting in the dysfunction and substantial damage to the internal organs of the Wei Qi, Ying Blood and San Jiao with regular changes. The main stages of the course of warm disease are: ① evil in the Wei part of the body, the first attack of warm evil, the disease is mostly in the Wei part; ② evil in the Qi part of the body, warm evil from the Wei part of the body into the Qi part of the body, resulting in internal heat; ③ evil in the Ying part of the body, warm evil from the Qi part of the body into the Ying part of the body, resulting in Ying heat and Yin injury; ④ evil in the Blood part of the body, warm evil from the Ying part of the body into the Blood part of the body, resulting in blood movement and blood depletion; ⑤ recovery stage, the patient’s positive energy is restored, and gradually recover recovery. In general, the first stage of warmth disease is dominated by the malfunction of the body, while the later stage is characterized by substantial damage, mainly the depletion of Yin and fluid and damage to important organs. Clinical manifestations have their specificity 1, the onset of disease is rapid, the rapid onset of disease, refers to the patient has a more accurate recent onset of time, it is one of the main basis of warm disease is different from many chronic diseases in the internal medicine miscellaneous diseases. 2, fever is the main symptom fever is a necessary symptom of warm disease, is the most basic, the main clinical manifestations of warm disease, but different warm disease in different stages of the disease has its own special type of fever. 3, prone to sinister symptoms warm disease course prone to spot rash and move wind, blood, closed orifices and other sinister symptoms. 4, the course of the disease is easy to consume yin and fluid warm evil is the evil of hyperactive Yang heat, hyperactive Yang injury Yin is the basic manifestation of warm disease, as Wu Jutong said: “warm heat, Yang evil also, Yang Sheng hurt people’s Yin also”.