Medicine is an ever-growing field. With the rapidly growing knowledge and advancement in the field, a practitioner needs to keep himself updated with the new information on diagnostic, drugs and other therapeutic measures. Thus, this book has been continuously modified and revised as per the latest information. Apart from adding up-to-date information on new drugs and therapeutics, special care has been taken to highlight the duration of therapy, adverse reactions and toxicity which are important while prescribing medications to a patient. A brief overview/ definition has been added for each disease entity along with the clinical signs, symptoms and laboratory diagnosis. Updated guidelines and recommendations for immunization and management of hypertension have been incorporated.