Traditional Chinese medicine external application therapy has a long history in ancient China. Good curative effect, simple use, safety and reliability, and is well received by patients. Its therapeutic principle is: (1). Local stimulation. That is to say, using factors with certain stimulating effect can dilate local blood vessels, promote blood circulation and improve the nutrition of surrounding tissues, thus playing the role of promoting qi and blood circulation, diminishing inflammation and reducing swelling.
(2) Direct penetration of drugs. Through the external application of the medicine, it can directly penetrate the skin and approach the focus, increase the intensity of local medicine, and play the roles of promoting blood circulation, removing blood stasis, promoting qi and blood circulation, clearing away heat and cooling blood, relieving swelling and pain, promoting angiogenesis, absorbing dead bone and forming new bone.
(3) topical administration, which transmits blood vessels or information through the meridians, enters the zang-fu organs through the meridians, spreads all over the body, and reaches the diseased place directly, so as to achieve the purposes of tonifying deficiency and purging excess, coordinating yin and yang, and reconciling the zang-fu organs and systemic diseases.
(4) Skin absorption. Skin is the largest peripheral barrier of human body, with large area and many pores. In addition to resisting exogenous pathogens, it also has metabolic functions of excretion and absorption. This therapy is the unity of drug permeability and skin absorption function, and then enters the body, and then plays the role of systemic or local treatment through the adjustment and distribution of meridians and viscera, or directly acts on local lesions. (kerb)