Accident and emergency is an emerging specialty stressing on the knowledge and medical skills required for the prevention, diagnosis and management of the acute and urgent aspects of illness and injury, affecting patients of all age groups covering physical and behavioral disorders. As time is the critical factor in this specialty, this book is planned to serve as a handy guide and reference on widely accepted techniques currently available for finding Causes, clinical diagnosis, investigations and management of acute medical emergencies and other common disorders. The contents of this book are presented in five parts Introduction (History Taking and Physical Examination) Medical Emergencies Accident Emergencies Surgical Emergencies Administrative and Legal Considerations Appendices The book discusses acute emergencies as well as some other common disorders for which the patients visit the department of accident and emergency for consultation and treatment. Special chapters on pediatric infections, cardiovascular disease, psychiatric problems, obstetrics and gynecological problems, environmental disorders, acute abdomen, and fractures are intended to serve as medically-oriented discussions in patient-care. Special attention has been given to recent developments such as pandemic Covid-19 and other infections; and in orthopedic surgery such as interlocking nailing, total joint replacement, revised hip arthroplasty, anterior cruciate ligament replacement and arthroscopic surgery. The book primarily aims at the medical students, residents, medical officers and all other professionals forming the main and support teams in the department of accident and emergency (A&E) in a hospital.