便秘型肠易激综合征是指临床表现以腹痛或腹胀、排便习惯改变等为主的慢性功能性肠道综合征，此病属反复发作 的难治性疾病。临证中症见大便秘结、排便困难、腹痛或腹胀，但无发热、口渴、烦躁等症的久病及老年便秘型肠易激综 合征的患者，其病机可归为肾阴失藏，相火离位，浮于大肠，暗耗津液；辨证属“阴不藏阳，虚阳浮越”之证，治疗宜采 用潜阳法；选方可采用三才封髓汤 （主要由人参、天冬、熟地黄、黄柏、砂仁、甘草等组成） 加减，常可获显效。

Constipation-predominant irritable bowel syndrome refers to the chronic functional intestinal syndrome characterized by the clinical meanifestations of abdominal pain or abdominal distension，and changes in bowel habits，which is a recurrent refractory disease. In the clinical practice，the patients with prolonged or senile constipation-predominant irritable bowel syndrome usually have the manifestations of constipation，difficulty in defecation，abdominal pain or bloating，but without fever，thirsty，or irritability，and their pathogenesis is due to the failure of kidney yin in storage and then the detached ministerial fire floats over the large intestine and secretly consumes the body fluid. The patients with prolonged or senile constipation-predominant irritable bowel syndrome can be differentiated as the syndrome of yin failing to store yang and floating of deficient yang，and therapy of subsiding yang can be used for the treatment by adopting the modification of Sancai Fengsui Decoction （mainly composed of Ginseng Radix et Rhizoma，Asparagi Radix，Rehmanniae Radix Preparata，Phellodendri Chinensis Cortex Amomi Fructus and Glycyrrhizae Radix et Rhizoma which can achieve remarkable efficacy.

R256.35

北京市自然科学基金资助项目 （编号：7202112）