类固醇的抗炎作用早已被普遍公认 ,但全身应用时其不良反应较多 ,尤其是长期使用时其副作用更为常见而严重。近几年来 ,对呼吸道变应性疾病常采用局部给药法喷鼻和吸入 ,由于其低剂量高浓度直接作用于靶组织 ,其治疗作用较全身给药更明显、快捷 ;经长期临床观察 ,其全身副作用 The anti-inflammatory effect of steroids has long been generally accepted, but systemic adverse reactions are more, especially when long-term use of its side effects are more common and serious. In recent years, allergic respiratory diseases often use topical nasal spray and inhalation, because of its low dose and high concentration of direct effect on the target tissue, the therapeutic effect than the systemic administration more obvious and faster; after long-term clinical observation, Its systemic side effects