Allergy and Immunology

The chapter on allergy and immunology reviews the risk factors, clinical presentation, diagnostic evaluation, and management of atopic diseases and immunodeficiency diseases. The material is presented in an engaging clinical vignette and question-and-answer format. The key medical conditions covered in the chapter include allergic and atopic diseases such as asthma, food allergy, anaphylaxis, urticaria/angioedema, drug allergy, and stinging insect allergy; it also touches on rarer primary immunodeficiency diseases. It highlights key clinical features to enable differentiation of allergic disorders from their mimickers; it provides a diagnostic approach to evaluate primary immunodeficiency diseases, and it covers both acute/urgent and long-term disease management.