What is shanghan lun?

Shanghan Lun is a classical Chinese medical text that was written by Zhang Zhongjing in the Eastern Han dynasty (25-220 AD). The title can be translated as "Treatise on Cold Damage Disorders" or "Treatise on Cold Injury".

The Shanghan Lun is one of the most important texts of traditional Chinese medicine and is still studied and used by practitioners today. It describes the diagnosis, treatment, and prevention of a range of conditions that were prevalent at the time, including cold and flu-like symptoms, fevers, and digestive issues.

The text is divided into two parts: the first part discusses the six stages of disease and the second part covers 94 different formulas or prescriptions that can be used to treat various illnesses. The six stages of disease are a classification system that helps Chinese doctors diagnose and treat different types of illnesses.

The Shanghan Lun is considered a masterpiece of Chinese medical literature and has been translated into many languages. It has had a significant impact on the development of traditional Chinese medicine and is still valued for its insights into the diagnosis and treatment of disease.