Charak Samhita – Sutrasthana – Chapter 20 (Maharoga Adhyaya) Abstract This chapter expands on the discussion of disease categorization in terms of endogenous and external causes, fundamental nature, place of origin, and clinical manifestations. Both endogenous and external diseases have specific causes that are explained. The chapter continues on to identify illnesses that are caused by just one dosha along with their causes. This clarifies the idea of distinct one-dosha illness types. Only an unbalanced vata can cause up to