Fully colored textbook based on the recent National Medical Commission (NMC) guidelines "Competency Based Undergraduate Curriculum for the Indian Medical Graduate released in 2018. All competencies listed in the NMC document have been incorporated and all the chapters have been revised and updated. Some new chapters and topics have been added as per the regulations. Learning objectives at the beginning of each chapter are divided into "Must know" and "Desirable to know". This book utilizes the "magic bullet" for easy understanding and quick revision of the subject as it covers all the topics required for theory, viva voce, practical in bullet format. The text is presented in a concise and lucid form like in previous editions, with line-diagrams, boxes, flowcharts, tables and differentiations used extensively to make the subject interesting, clear the concepts and recollect and reproduce during examinations. Colored images and line-diagrams are generously incorporated for better understanding and clarity of the concepts. Flowcharts, boxes, tables and differentiations have been added wherever possible. Important points are highlighted as 'Pearls' which can useful during Viva and Multiple Choice Questions (MCQs). "High-yield" provides a nutshell view of the chapter comprising of key take-away messages. In furtherance with the development of practical skills, innovative "image based questions" have been incorporated within the text for better understanding and clear the concepts. A case report has been included at the end of the chapter so to generate inquisitiveness. Older terminologies and concepts have been removed and newer ones added. Recent advances have been incorporated wherever required. Important sections of IPC, CrPC and IEA, and signs and antidotos of common poisons are given in separate tables at the beginning of the book.