The brain-gut connection has been increasingly implicated in biopsychosocial well-being. While there are numerous factors that directly and indirectly impact on how the gut and the brain interact, there is a growing awareness that gastrointestinal conditions need to be viewed and treated as part of a multidisciplinary approach. Psychogastroenterology for Adults: A Handbook for Mental Health Professionals is the first book to provide mental health professionals with an evidence-based, practical guide for working with patients living with gastrointestinal conditions. Timely and accessibly written, this book provides a unique, comprehensive introduction to psychogastroenterology, offering a step-by-step guide to evidence-based psychological treatment protocols. Broad in scope and expertise, the book is divided into four parts. It opens with an overview of the field, moving on to outline psychological concerns and conditions in gastroenterological (GI) cohorts. Further, it covers various approaches to psychogastroenterology, including psychopharmacological and eHealth practices. In closing, the book looks to the future, providing guidance on supervision in psychogastroenterology, and exploring challenges in the field. Written by experts in the field, this book will be an indispensable resource for those who wish to enhance their knowledge and practice of psychogastroenterology in the mental health profession, including psychologists, psychiatrists, psychosomatic medicine specialists, nurses and social workers.

The MDCP will bring knowledge to clinicians beyond the diagnostic criteria: to provide guidelines about the clinical profile of individual patients that will help in selecting more focused treatment options. The current diagnostic criteria for functional GI disorders helps to classify patients for research studies. However, it does not capture the full dimensionality of a patient's clinical profile. For example an IBS patient seen in primary care may be treated quite differently from a patient with the same diagnosis seen at a major medical center, the latter having with more severe symptoms, psychological co-morbidities or more severe physiological disturbances. Therefore the multi-dimensional clinical profile permits an ability to characterize the patient not only in terms of the diagnosis as currently exists but also in terms of any clinical modifiers (e.g., IBS-C, D, or M), the impact of the condition (mild, moderate or severe), the presence of any psychosocial modifiers, or the degree of physiological dysfunction and biomarkers. This will help to direct the type and degree of treatments .

The Rome IV criteria refer to functional gastrointestinal conditions as "Disorders of Gut-Brain Interaction." These conditions are involved in an estimated 40% of patient visits to gastroenterologists. Naturopathic functional diagnosis and individualized treatment are uniquely suited for good outcomes with these disorders. In Functional Gastroenterology, Steven Sandberg-Lewis, ND, DHANP, draws on skills and knowledge he has built during four decades of Naturopathic practice and teaching. He articulates clinical pearls and presents a thorough review of the relevant published research. This text focuses on the underlying causes of functional GI disorders as well as their diagnosis, treatment and management.

The field of pediatric FGIDs has grown over the last two decades, and for this reason we have decided to publish a separate book on pediatric FGIDs, which is extracted from the main Rome IV chapter material. This book has an introduction by co-guest editors Samuel Nurko, MD (chair of the Neonate-Toddler Committee) and Carlo Di Lorenzo, MD (chair of the Child-Adolescent Committee).Following this are the two updated and expanded pediatric chapters of Rome IV and also newly validated sets of the pediatric diagnostic questionnaires and criteria, a series of pediatric Multidimensional Clinical Profile (MDCP) cases for the Rome IV book, and a set of diagnostic algorithms for both neonate-toddler and child-adolescent. Thus the pediatric gastroenterologist can possess a complete but compact book on FGIDs relative to his or her specialty.

The research and outcomes presented in this book gather evidence concerning both the pathogenesis and treatment of functional dyspepsia. It provides the latest information on this common non-organic disease, indicating its characteristic pathogenesis based on the brain-gut interaction and micro-environment and evidence gleaned from clinical treatment. Since the pathogenesis is associated with psychology, neurology, endocrinology and bacteriology in addition to gastroenterological physiology, it is often intractable and finding a suitable treatment rationale is challenging. Furthermore, the pathogenesis varies around the world and the efficacy of treatment using standard drugs varies among different populations worldwide; accordingly, this book highlights evidence gained in clinical trials in Japan. Functional Dyspepsia is a milestone produced by respected experts. Addressing unique topics and new findings of treatment including challenging and/or future rationales, it offers an invaluable resource for general clinicians, gastroenterologists, and basic researchers alike.