A new addition to the well-respected Nelson family of pediatric resources, this concise and user-friendly handbook uses a unique algorithmic approach to facilitate diagnosis for 89 of the most common pediatric signs, symptoms, and electrolyte abnormalities. For any given symptom, an algorithm guides the reader through the appropriate investigative procedures and laboratory tests to a definitive diagnosis. Succinctly-written discussions follow each algorithm, explaining key elements of the history and physical exam, additional diagnostic clues, and special considerations.