The document discusses diagnostic principles and tools in Ayurveda. It explains that diagnosis in Ayurveda is based on identifying the cause, signs and symptoms of a disease through examination of the disease itself and the patient. Some key Ayurvedic diagnostic tools and examinations mentioned include Dashavidha Parikshya, Astavidha Parikshya and Panchendriya Parikshya. The document also compares Ayurvedic diagnosis to modern medical diagnosis and notes that Ayurveda diagnosis focuses on identifying imbalances in doshas, dhatus and ojas through examination of prakruti, vikruti and arista lakshanas.