This book is part of the Servet Clinical Guides collection, in which each volume compiles the most relevant material on the subject matter covered. This volume focuses on dermatology and is centered on the management of allergic patients. This new collection was created with the objective of helping veterinary surgeons during consultations and providing them with useful information to establish a good relationship with clients. The goal is to give answers to owners’ most frequently asked questions in order to guide them in the best possible manner, as well as to help veterinary surgeons ensure owners complete the patients’ prescribed treatments and maintain effective clinical monitoring of all processes. Each of the volumes in this collection will also be very useful to veterinary surgeons to reinforce and expand their knowledge.