Nidanasthana is a significant section in Charaka Samhita, an ancient Indian Ayurvedic text. Focused on diagnosis, Nidanasthana outlines the principles of identifying the causes and origins of diseases. It encompasses various diagnostic methods, including examination of pulse, urine, and other clinical observations, guiding effective treatment strategies.

Sutrasthana is a pivotal section within Charaka Samhita, the ancient Indian Ayurvedic text. It lays the foundation for Ayurvedic principles, detailing fundamental concepts, ethical guidelines, and lifestyle recommendations. Sutrasthana serves as a concise and essential guide, offering a systematic framework for understanding health, disease, and their management.