Internal medicine is a medical specialty, which deals with the diagnosis, prevention and treatment of diseases in adults. Specialists in this field are involved in the management of complex multisystem disease conditions, such as weight loss, chest pain, dyspnoea, fatigue, etc. as well as multiple chronic diseases or comorbidities. Some of the subspecialties in this field are allergy, asthma and immunology, endocrinology, hematology, gastroenterology, rheumatology, etc. This book is compiled in such a manner, that it will provide in-depth knowledge about the current practices and procedures of internal medicine. The aim of this book is to present the new researches that have transformed this discipline and aided its advancement. It is a vital tool for all researching or studying internal medicine as it gives incredible insights into emerging trends and concepts.