过敏性肺炎是机体吸入抗原物质后产生免疫反应,形成的一种从细支气管到肺泡壁的弥漫性类上皮细胞内芽肿性炎症。临床表现为咳嗽、呼吸困难、发热、胸部X线为弥漫分布的粟粒状阴影、血白细胞增高、血沉快、CRP阳性、病因抗体沉降反应阳性、对肾上腺皮质激素治疗效果显著。目前已发现该病有农民肺、枫皮病、饲鸟者肺以 Allergic pneumonia is the body’s inhalation of antigen substances after the immune response, the formation of a bronchial to the alveolar wall of diffuse epithelial cells within the class of inflammation. Clinical manifestations of cough, dyspnea, fever, chest X-ray diffuse distribution of miliary shadows, white blood cells, ESR faster, CRP-positive, etiological antibody subsidence was positive for the treatment of adrenal cortex hormones significantly. It has been found that the disease has farmer lungs, Maple disease, bird feeders to the lungs