Pathogenesis in TCM by acupuncture – community generally speaking, the manifestation of the disease is due either to the disharmony between Yin and Yang and the clash between the pathogenic Qi and Qi anti-patogeno.Known as anti-patogeno Qi, or, all the functions of the human body, as well as the same capacity to combat diseases. The Qi pathogen, known as, refers to the set of all the causative factors of diseases. At the time of diseases are always present both a relative insufficiency of Qi anti-patogeno and an excess of pathogenic Qi.Both one and the other are the two main factors that cause the appearance of diseases, is however anti-patogeno Qi deficiency causing head of pathologies, since this is the internal factor that allows the invasion of exogenous pathogenic factors, i.e., pathogenic Qi. TCM practitioners give special attention both to the internal conditions and the external. Factors and conditions internal – or endogenous they have been especially important in traditional Chinese medicine in terms of understanding the nature of diseases and clinical practice orientation. Although the nature of diseases can be very complicated and different for each, in a generalized manner this can be understood in terms of different processes pathogens of the following three forms: dissonance between Yin and Yang, the struggle between the anti-patogeno Qi and pathogenic Qi, and irregularities in the descending or ascending movements of Qi.These three aspects are closely linked during the course of the development of diseases. Dissonance between the Yin and the Yang say dissonance between the Yin and the Yang, we refer to pathogenic changes that involve either an excess or a deficiency of Yin or Yang, which happens when the body is invaded by the pathogenic Qi.Diseases do not occur unless the body is invaded by the pathogenic factors, which cause alterations of the Yin and Yang in the inside of the body.