ABSTRACT: Allergies are common disorders seen in virtually every medical practice. These disorders include allergic rhinitis, food allergy, drug allergy, urticaria, angioedema, atopic dermatitis, contact dermatitis, and asthma. Although the underlying pathophysiology, patient symptoms, and inciting allergen may vary based on each individual diagnosis, identification and avoidance of the causative allergen is the cornerstone of management. Depending on the particular allergic disease, treatment measures may include allergen avoidance, pharmacotherapy, allergen immunotherapy, or allergen desensitization. Future therapies that target inflammatory mediators and refinements in allergen immunotherapy are on the horizon.