More than 50 million people in the United States suffer from allergies, asthma and related conditions. An allergy is an adverse reaction, caused by a patient's own immune system, to a substance that would generally be considered harmless. If symptoms occur in the nose or sinuses, this is called allergic rhinitis or hay fever. Symptoms in the lungs or bronchial tubes are called asthma. Skin symptoms are referred to as hives or urticaria.Lahey's Department of Allergy and Immunology specializes in the diagnosis and treatment of these conditions. Patients are evaluated through detailed histories, physical examinations and, if applicable, breathing and allergy skin tests. Treatment options for allergic conditions include avoidance of allergens, medications to reduce symptoms and, in some cases, allergy injections that can be helpful in controlling the underlying illness rather than just controlling symptoms.Our physicians, nurses and other health care providers are experts in the testing and treatment of both children and adults. Our certified asthma educators continue to raise the bar in patient care, keeping you informed about treatment options and empowering you when it comes to managing your condition.We invite you to explore our site and learn more about allergies, our services and treatment options.