三因极一病证方论
三
三因极一病证方论
📅 宋👤 Chen Yan (陈言)
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Original
三因极一病证方论·序
Translation
The Treatise on the Three Categories of Pathogenic Factors and Prescriptions for All Diseases: Preface. The three categories are internal causes, external causes, and causes that are neither internal nor external. This work systematically classifies disease causes and provides corresponding formulas.
📝 Commentary
This preface introduces Chen Yan's influential Song dynasty medical text, which organized diseases by three causal categories. It marked a major advance in systematic etiology and formula matching in traditional Chinese medicine.
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