The goal of this book is to present a diagnostic framework on which a learner can build his or her “databank” of diagnostic facts. The format of each systems-based chapter consists of an “Introduction,” “Physiology and Mechanics,” “Functional Anatomy,” “History,” “Physical Examination,” “Synthesizing a Diagnosis,” “Laboratory and Imaging,” and “When to Refer.” We have attempted in the “Synthesizing a Diagnosis” sections to present the material in tabular form whenever possible so that the learner has more concise and digestible information.