Allergic diseases are one of the most common disorders, besides the economic burden resulting from treatment expenses, they also affect the quality of life of atopic patients. Epidemiological studies have reported an increasing prevalence of allergic disorders in many countries. The fact that the prevalence of allergic disorders has been increasing reflects the role of many risk factors such as genetic predisposition, diet, early microbial exposure, air pollutants and pollens. Therefore, by this book I aimed to encourage health care providers (Physicians, Pharmacists, Nurses, Traditional healers ...), Patients, Media to be viable in fighting this disorder effectively and safely.