Davidson’s Clinical Cases reflects the real world in which doctors practise medicine. Patients may present with problems that cross several organ systems and with no obvious diagnosis in sight! This selection of clinical problems guides the reader, step by step, through the correct path in the maze between the presenting complaint of a patient and the final diagnosis. The text emphasises the value of interpreting available clinical and investigative information in a logical way before considering a definitive diagnosis. The authors of the book are a truly international group drawn from both the contributors to Davidson’s Principles and Practice of Medicine and from members of the International Advisory Board to ensure that a global approach is taken to the contents of the book.