2 patients mainly by diﬀerentiating the syndromes according to the symptoms and signs caused by hypertension and paid more attention to relieve symptoms and improve the quality of life. The most common clinical manifestations of hypertension are dizziness, headache, fatigue, shortness of breath, lassitude in the loins and knees, memory loss, dry eye, palpitation, and so on [6]. The disease belongs to “vertigo” in Chinese medicine. The main pathogenesis of vertigo is stagnation of phlegm, excess of liver yang, deﬁciency of qi and blood, liver- kidney yin deﬁciency, and stagnation of blood. In addition, there are important pathogenesis such as excessive ﬂuid and pathogenic factor in Shaoyang meridians according to the clinical experience in Shang Han Lun (Treatise on Febrile Diseases). Dizziness caused by excessive ﬂuid syndrome is always accompanied by chest distress, palpi- tation, nausea, and vomiting. Paroxysmal dizziness is one of the typical symptoms in Shaoyang syndrome. Persistent dizziness, headache, nausea, and vomiting can be found in Shaoyang syndrome accompanied by heat and excessive ﬂuid syndrome. The syndrome diﬀerentiation of headache is similar to vertigo. The main pathogenesis of headache is excess of liver yang, deﬁciency of qi and blood, kidney deﬁciency, stagnation of phlegm and blood. We found that headache is caused by the ﬂaring-up of ﬁre in patients with hypertension. Flaring-up of stomach ﬁre and intestinal ﬁre followed by meridians are also very common, besides excess of liver yang. Severe headache generally suggests blood stasis; therefore, blood-activating and stasis-dissolving drugs should be used to relieve pain quickly. Moreover, cold accumulation in the liver and stomach should not be neglected, which can result in severe headache in the disease. Weakness and fatigue are extremely common symptoms of the disease. Generally speaking, it is caused by deﬁciency of qi, blood, yin, and yang. However, they are not the characteristic symptoms of deﬁciency syndrome. Some are caused by dampness and water accumulated inside. As the characteristic of pathogenic dampness is weight and sticky, which leads to stagnation of the functional qi and consumption of yang qi, weakness, fatigue, heaviness in head and body, and lassitude in loins and limbs often appear. In addition, although lassitude in loins and limbs is the characteristic symptom of kidney deﬁciency, excessive ﬂuid is also an important factor of the symptom. Fu Ling (Poria cocos) and Bai Shu (Atractylodes) contained in Gancao Ganjiang Fuling Baishu Tang (Decoction of Glycyrrhiza, Dried Ginger, Poria cocos, and Atractylodes) treating lassitude in loins and limbs can invigorate spleen to resolve dampness. Fu Ling (Poria cocos) and Ze Xie (Alisma) contained in Liu Wei Dihuang Wan (Pill of Rehmannia) and Shen Qi Wan (Pill of Kidney Qi) have the identical eﬀection. 3. Differentiation of Pathogenesis The identiﬁcation of the etiology and pathogenesis of hypertension in TCM viewpoint is directly related to the syn- drome diﬀerentiation and therapeutic methods. According to the traditional view, the pathogenesis of hypertension is Evidence-Based Complementary and Alternative Medicine considered as founding on yin deﬁciency, with yang hyperac- tivity in the superﬁciality and phlegm-dampness and blood stasis penetrating all along; therefore, the basic therapeutic methods should be to supplement qi and nourish yin [4]. However, due to the widely used antihypertensive agents, the progression of the disease was blocked in time, which leads to great changing of the natural history and pathogenesis of hypertension. Therefore, we should not only pay attention to yin deﬁciency and yang hyperactivity syndrome but also follow the pathogenesis and syndromes of the illness with interest in the recognition of the pathogenesis of hyperten- sion and treat the disease according to clinical symptoms. The author found that the main pathogenesis of the disease is heat, excessive ﬂuid, and deﬁciency, which occurred incorporatively and interacted with each other in patients. Heat syndrome can be found in various stages of hypertension, especially when target organ damage is not found. Heat syndrome includes liver ﬁre, heart ﬁre, stomach ﬁre, and intestinal ﬁre. Liver ﬁre syndrome often shows clinical symptoms such as vertigo, headache, facial ﬂush with perspires, conjunctival congestion, bitter taste in the mouth, irritability, wiry-rapid-powerful pulse, or powerful cunkou pulse alone, or wiry and long pulse even well beyond cunkou pulse. Longdan Xie Gan Tang (Decoction of Radix Gentianae for Purging Liver Fire) noted in Yi Fang Ji Jie (Collection of Prescriptions with Notes), Tianma Gouteng Yin (Decoction of Gastrodia and Uncaria) noted in Za Bing Zheng Zhi Xin Yi (New Meanings in Syndrome and Therapy of Miscellaneous Diseases), and San Cao Jiang Ya Tang (Decoction of Antihypertensive Eﬀect) which is Professor Liu Duzhou’s experienced prescription containing Long Dan Cao (Gentian), Xia Ku Cao (Prunella vulgaris), Yi Mu Cao (Leonurus japonicus), Shao Yao (Chinese Peony), and Gan Cao (Glycyrrhiza) all can be used for clearing liver ﬁre and lowering blood pressure. Patients with heart ﬁre syndrome often present with distraction, distress in chest, vexation, palpitation, nervousness, insomnia and dreaminess, hard to sleep, and easy to wake. Zhizi Chi Tang (Decoction of Gardenia and Lobster Sauce) and Huanglian Jie Du Tang (Detoxicant Decoction of Coptis) all can be used for clearing away heart ﬁre and lowering blood pressure. Patients with stomach ﬁre syndrome often present with dry mouth, thirst with desire for cold drinks, easy to starve, foul breath, smelly stool, and right guan pulse powerful alone. Bai Hu Tang (White Tiger Decoction) can be used to clear away stomach ﬁre and lower blood pressure. Intestinal ﬁre syndrome often shows foul breath, constipation, abdominal distension and pain, strength, and deep-hidden-powerful pulse. Da Chaihu Tang (Major Bupleurum Decoction) can be used for clearing away intestinal ﬁre, dredging intestines, and descending turbid substance. Liver ﬁre and heart ﬁre often appear simultaneously, which result in hyperactivity of heart ﬁre and liver ﬁre syndrome in the disease. In addition, the liver restricting the spleen and stomach may also result in hyperactivity of liver ﬁre, stomach ﬁre, and intestinal ﬁre. Fluid retention syndrome is a special type of the disease, containing morbid ﬂuid retained in Shangjiao, Zhongjiao, and Xiajiao syndromes, cold ﬂuid retention syndrome, ﬂuid retention turning into heat syndrome, and downward