Irritable Bowel Syndrome (IBS) has recently been identified as a serious physiological syndrome involving a disorder of GI motility, requiring an understanding of the enteric nervous system and neurotransmitters. This book presents an invaluable practical reference to internists and specialists concerning our current understanding of this complex disorder. As a readable reference for the science of this disorder, it also serves as a guide for the practitioner, providing practical advice to give their patients.