About the Book: Must Know Medicine is a practical clinical guide for MBBS interns, junior residents, postgraduate medicine residents, and senior residents. It focuses on the diagnosis and management of common diseases and symptoms encountered in OPDs and primary healthcare settings. The book provides step-by-step treatment approaches, basic management protocols, investigation guidance, and red-flag signs indicating specialist referral. Covering everyday conditions such as hypertension, diarrhoea, and hypothyroidism, it bridges the gap between medical theory and practical clinical decision-making. An essential reference for medical students and doctors seeking quick, practical guidance for everyday patient care.