Phlegm   Phlegm In TCM a disharmony of body fluids can produce either external, visible phlegm, such as sputum secreted by the respiratory tract, or internal, invisible phlegm. Internal, invisible phlegm is considered a particular problem in TCM. It is usually formed by dysfunction of the lungs and the spleen, and occasionally by the consumption of body fluids by fire and heat evils. Phlegm is one of the pathogenic (disease causing) factors responsible for the occurrence and development of a range of disorders.		tan 痰   痰為臟腑病理變化產物，包括呼吸道分泌的有形痰液或無形的中醫致病因素。它的形成大多與肺、脾功能失常有關。主要是由體內濕邪積聚轉化，或火熱煎熬津液而成。中醫認為可導致多種疾病，例如喘咳、眩暈、胸痺、癲癇及結核病等。