The 4th edition is updated with all recent developments in investigation and management with a new look and design. Aims to understand the diagnosis and provide a foundation for the treatment. An evidence-based clinical resource book and their application to clinical practice. Teaches the skills needed to interpret medical research and apply it to patient care. Covers almost all areas of internal medicine, antibiotics, ECG, etc., in depth for postgraduate reference. Charts, flow diagrams, and tables are given for easy reading. Simple language and format for easy understanding. References are taken from standard textbooks like Harrison's Principles of Internal Medicine 21st edition, Davidson's Principles and Practice of Medicine 24th, UptoDate Journal, and many other major international guidelines. Useful for MD/DNB students in Internal Medicine, Respiratory medicine, Critical care medicine, Emergency medicine. It is also useful for practicing physicians and Medical & Para medical students. Useful for preparation of NEET SS examination.