This book is one of five in the Blueprints Series. This title presents the principles of Internal Medicine in a succinct format that complements the structure of the USMLE Step 2 exam. It can be used as a stand-alone text for the Internal Medicine clinical rotation, or in conjunction with other titles in the series for a comprehensive review for the USMLE Step 2 & 3 exams. The second edition of this book will include 125 clinical vignette style questions at the end of the book. The series format is consistent for all five titles; each title presents short expositions on one of the five key clinical topics.