This handbook is written with an objective of increasing awareness about skin allergy as well as provide an easy-to-refer resource for family physicians, consultant physicians, and postgraduate students of dermatology while managing skin allergy-related conditions. I personally wish to thank all authors from India and other countries for providing their contributions in the form of chapters to all four sections, i.e., Urticaria, Atopic dermatitis, Contact dermatitis, and Drug allergy. Clinical pictures, images, tables, and flowcharts are the highlights of this book.