This book “APICON 2025 Workshop Manual - Foundations of Allergy Practice: A Practical Guide for Clinicians” has been driven by the belief that the field of allergy and immunology demands a comprehensive and regionally nuanced approach. With allergy-related conditions affecting millions of lives worldwide and an ever-growing number of individuals experiencing the impact of allergens on their health, it has become increasingly clear that clinical understanding must blend historical knowledge, practical techniques, and regional considerations.\nThis book is structured into five chapters, each reflecting a fundamental aspect of allergy science and practice that we believe is essential for healthcare providers. In Chapter 1, “Introduction to Allergy,” we explore the foundations of allergy and its development as a discipline. In Chapter 2, “History-taking and Clinical Methods in Airway Allergy,” is on the crucial art of clinical evaluation. We emphasize the importance of history-taking in airway allergy diagnoses, recognizing that understanding a patient’s unique experience, triggers, and response patterns can often lead to insights that testing alone cannot provide. In Chapter 3, “Skin Prick Test,” we delve into one of the most valuable diagnostic tools in allergy practice. In chapter 4, “Allergen Immunotherapy,” presents a transformative approach to allergy management that extends beyond symptomatic relief. This chapter explores immunotherapy’s mechanisms of action, its forms (subcutaneous and sublingual), and its long-term benefits in altering immune responses to allergens. In Chapter 5, “Aeroallergens in India,” we highlight the unique landscape of aeroallergens within the Indian subcontinent. India’s diverse climate, ecology, and rapid urbanization have created distinct challenges in managing aeroallergen-related conditions. \nOur objective in writing this book has been to offer an evidence-based, practice-oriented resource that can serve as a reference for both new and experienced practitioners. We have endeavored to integrate our clinical experiences, scientific insights, and a deep commitment to advancing the field of allergy management into each chapter.