The present work unveils the principles of diagnosis in a new format. It well suited to the current students of Ayurveda. The salient feature of this book is that it focuses on the applicability and adaptability of our principles. For each part, there are evaluation, exercise and theme activities. All these presentation instills confidence in the learner on the theoretical foundations of Ayurveda. The current work also incorporates well the structural basis of the disease, the so called 'modern' understanding. The dilemma felt by the student when the 'modern' and 'ancient' taught as a heterogeneous mixture of ideas is really alarming. This makes the student to deviate from the Ayurvedic way of thought and he relays upon more on the 'modern'. Dr. Madhu's effort in many a way prevents this landslide.