Book excerpt: This book is the first comprehensive reference on the interface between neurology and internal medicine. In 171 chapters organized by organ system, the book examines the neurologic manifestations of dozens of medical conditions, the neurologic effects of drugs, organ transplantation, and other treatments, and the medical comorbidities or complications—iatrogenic or otherwise—that neurologists must diagnose and treat in patients with neurologic disease. Most chapters are co-authored by a neurologist and a non-neurologic specialist. Each chapter presents information in an accessible format and includes a case vignette and the authors' recommendations for the case. A companion Website provides a multiple-choice question for each chapter and the fully searchable text, with case vignettes and recommendations linked.