This text walks the reader step by step through diagnosis and management using a signs and symptoms approach. This patient-oriented structure leads to a logical development of a differential diagnosis and evaluation and treatment plan, offering clear steps to confirm the diagnosis and provide appropriate therapy. Key features include a patient-focused, problem-oriented approach; greatly revised content throughout, including new medications, new names of known pathogens, new practice guidelines, and extensive revisions to chapters on urinary syndromes, hepatitis syndromes, and HIV infection and AIDS; newly streamlined format; new two-color design and updated and expanded illustrations; an experienced author team that now includes Dr. Armando Correa, a pediatric infectious diseases physician who practices general pediatrics.