Nelson Essentials of Pediatrics is the pediatric reference of choice for students and practitioners. Concise, easy to use, and authoritative, this text focuses on normal growth and development, along with the diagnosis, management, and prevention of common childhood diseases and disorders. Each chapter is organized in a practical way that reflects the clinical approach to patients. This indispensable reference has become a bestseller because of these outstanding features: Focuses on the core aspects of pediatric health and disease; Each chapter presents information in a logical manner to expedite diagnosis: physical examination; analysis of the information; laboratory and diagnostic testing; Emphasizes the pathophysiologic aspects of pediatric disease and the psychosocial dynamics of illness; Covers the genetic bases of disease, when applicable, since the understanding is critical for clinical decision making; Organized by organ system to present disorders in the context of the system they affect; Incorporates a plethora of tables and figures that summarize and highlight key clinical information; Cross-referenced to the 16th edition of Nelsons Textbook of Pediatrics; Includes appendices with clinically useful data on drug dosages and interactions. Plus these new features: NEW CHAPTER on Pediatric Dermatology, covering a range of pediatric skin disorders; All chapters thoroughly updated to reflect new molecular medical findings; Includes new information on the genetic determination of problems.