We are the specialists in the diagnosis and the treatment of respiratory allergic diseases including bronchial asthma, allergic rhinitis and allergic conjunctivitis, and food allergy, drug allergy, insect allergy and anaphylaxis. We also specially treat a spectrum of skin allergic diseases such as urticaria, angioedema and atopic dermatitis. The prevalence of allergic diseases in Korea is increasing due to recent change of living environment such as urbanization and industrialization. For the top class treatment, we are applying advanced diagnostic and therapeutic skills including allergy tests and allergen immunotherapy. At the Allergy Clinic, we perform the various types of allergy tests such as allergy skin tests, bronchial provocation tests, allergen or drug provocation tests, tests for allergic rhinitis, and pulmonary function tests. Finally, we provide personalized solutions to individual patients for their allergic diseases. We are also contributing to the research field and have a number of publications on allergic diseases and its pathogenesis.