This chapter presents a case study on Treating Anaphylaxis Due to Allergies using the discovery engineering process. In this lesson, students explore the discovery of anaphylaxis response due to overexposure of allergens. The discovery of this phenomenon led to a revolution in understanding what allergies are and how they are treated. After reading the case study, students use sample blood test data to determine the allergen in a food and then propose a treatment plan. Students then use their understanding of allergies to propose a medical treatment for a condition or disease. A list of materials, teacher background information, teacher notes, references, resources, assessments, and standards are provided. This book selection also includes the Table of Contents, About the Authors, Acknowledgments, Introduction, and Index.