“升清降浊”法辨治“上虚下实”证的理论探讨

A Theoretical Discussion on the “Raising the Clear and Lowering the Turbid” Method for the Diagnosis and Treatment of the “Upper Deficiency and Lower Excess” Syndrome

摘要: 为系统阐释“升清降浊”法辨治“上虚下实”证的病机模型与治法体系，通过理论溯源与病机推演，构建该证的辨识框架与治疗法则。研究认为，“上虚下实”证以脾胃虚弱为病机之本，以清阳升出不及为“上虚”之核心，以浊阴降入障碍为“下实”之关键，其辨识以舌苔腻、寸脉弱与关尺脉弦并见为核心要点。治法以升清降浊为纲，系统运用血分药以助化浊，并全程顾护阴液。方药形成以柴胡、升麻、葛根升清，半夏、茯苓、牡丹皮、当归、山楂降浊，生地、麦冬顾阴为核心的高度规律性配伍。该体系融通东垣内伤学说与温病学精要，为现代复杂“上虚下实”证候提供了理法方药完备的辨治范式。本文为理论探讨与经验归纳，所提辨识要点及配伍规律的敏感性、特异性尚需大样本临床研究验证。

Abstract: To systematically elucidate the pathogenetic model and therapeutic framework for the syndrome of “upper deficiency and lower excess” based on the principle of “raising the clear and descending the turbid”, this study constructs a diagnostic framework and treatment principles for this syndrome through theoretical tracing and pathogenetic analysis. The study posits that the “upper deficiency and lower excess” syndrome is fundamentally rooted in spleen-stomach deficiency; the core of “upper deficiency” lies in the failure of clear yang to rise adequately, whilst the key to “lower excess” lies in the obstruction of turbid yin descending. Its identification centres on the concurrent presence of a greasy tongue coating, a weak cun pulse, and taut guan and chi pulses. The therapeutic approach follows the principle of “raising the clear and descending the turbid”, systematically using blood-phase herbs to transform turbidity while safeguarding yin fluids throughout treatment. The formulation is characterised by a highly systematic combination centred on Bupleurum, Cimicifuga and Pueraria root to raise the clear, Pinellia, Poria, Moutan bark, Angelica sinensis and Hawthorn to descend the turbid, and Raw Rehmannia and Ophiopogon to nourish yin. This system integrates the theories of Dongyuan’s Internal Injury and the essentials of Warm Disease theory, providing a comprehensive diagnostic and therapeutic paradigm—encompassing theory, methodology, formulae, and herbal prescriptions—for the modern complex syndrome of “upper deficiency and lower excess”. As a theoretical discussion and clinical experience summary, the sensitivity and specificity of the proposed identification criteria and formulation rules require validation through large-sample clinical studies.