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McGraw-Hill Education has no responsibility for the content of any information accessed through the work. Under no circumstances shall McGraw-Hill Education and/or its licensors be liable for any indirect, incidental, special, punitive, consequential or similar damages that result from the use of or inability to use the work, even if any of them has been advised of the possibility of such damages. This limitation of liability shall apply to any claim or cause whatsoever whether such claim or cause arises in contract, tort or otherwise. To my wife, Kara, and my children, Siddharth, Avani, and Anika—SSS To my wife, Zella, and her three adoring grandsons, Jack, Seneca, and Rainer— SL CONTENTS Contents by Diagnosis Contributors Preface 1 Wheezing Dustin r. haferbecker, Evan S. Fieldston, Todd A. Florin Case 1-1: Eight-Month-Old Girl Case 1-2: Three-Year-Old Boy Case 1-3: Five-Week-Old Boy Case 1-4: Fifteen-Month-Old Girl Case 1-5: Five-Week-Old Boy Case 1-6: Four-Month-Old Boy 2 Decreased Activity Level Matthew Test, Nathan Timm, Phillip Spandorfer, Megan Aylor Case 2-1: Fifteen-Year-Old Girl Case 2-2: Two-Week-Old Boy Case 2-3: Three-Month-Old Girl Case 2-4: Eleven-Month-Old Boy Case 2-5: Nine-Year-Old Boy Case 2-6: Twenty-Month-Old Boy 3 Vomiting Paul L. Aronson, Todd A. Florin, Amy Feldman, Joanne N. Wood, Kamillah N. Wood Case 3-1: Seven-Week-Old Boy Case 3-2: Nine-Month-Old Girl Case 3-3: Three-Year-Old Girl Case 3-4: Ten-Year-Old Girl Case 3-5: Four-Year-Old Girl Case 3-6: Ten-Month-Old Girl Case 3-7: Two-Year-Old Boy Case 3-8: Two-Year-Old Girl 4 Cough Debra Boyer, Stephanie Zandieh, Tregony Simoneau, Lianne Kopel, Alicia Casey, Todd A. Florin, Phuong VO Case 4-1: Sixteen-Year-Old Girl Case 4-2: Seven-Week-Old Boy Case 4-3: Seven-Month-Old Girl Case 4-4: Three-Year-Old Boy Case 4-5: Two-Year-Old Girl Case 4-6: Four-Month-Old Boy 5 Back, Joint, and Extremity Pain Megan Aylor, Sanjeev K. Swami, Maya A. Jones, Evan S. Fieldston, Pamela A. Mazzeo Case 5-1: Two-Year-Old Boy Case 5-2: Two-Year-Old Boy Case 5-3: Fourteen-Year-Old Boy Case 5-4: Sixteen-Year-Old Girl Case 5-5: Thirteen-Year-Old Boy Case 5-6: Nine-Year-Old Boy 6 Poor Weight Gain Stephen Ludwig, Brandon C. KU, Sanjeev K. Swami, Maya A. Jones, Kamillah N. Wood Case 6-1: Sixteen-Month-Old Boy Case 6-2: Seven-Month-Old Boy Case 6-3: Twenty-Day-Old Girl Case 6-4: Five-Day-Old Boy Case 6-5: Three-Month-Old Girl Case 6-6: Twenty-One-Month-Old Boy Case 6-7: Eighteen-Month-Old Boy 7 Abdominal Pain Marina Catallozzi, Sanjeev K. Swami, Paul L. Aronson Case 7-1: Thirteen-Year-Old Boy Case 7-2: Five-Year-Old Girl Case 7-3: Eleven-Year-Old Girl Case 7-4: Nine-Year-Old Girl Case 7-5: Eight-Year-Old Boy Case 7-6: Two-Year-Old Girl Case 7-7: Three-Year-Old Girl 8 Altered Mental Status Nathan Timm, Jennifer L. McGuire Case 8-1: Three-Year-Old Boy Case 8-2: Twenty-Month-Old Boy Case 8-3: Nine-Year-Old Boy Case 8-4: Eight-Month-Old Boy Case 8-5: Fourteen-Year-Old Girl Case 8-6: Four-Year-Old Boy 9 Rash Kara N. Shah, Kamillah N. Wood, Joanne N. Wood, Christine T. Lauren Case 9-1: Eight-Year-Old Girl Case 9-2: Eleven-Week-Old Girl Case 9-3: Four-Year-Old Girl Case 9-4: Fourteen-Year-Old Boy Case 9-5: Sixteen-Year-Old Girl Case 9-6: Eighteen-Month-Old Girl 10 Pallor Stephen Ludwig, Brandon C. Ku, Maya A. Jones Case 10-1: Three-Week-Old Boy Case 10-2: Twelve-Month-Old Girl Case 10-3: Five-Month-Old Boy