For example, there are allergic diseases like nasal catarrh, atopic eczema, and urticaria, whose origins are similar to asthma. The increase in the number of sufferers and the lowering of age at which the diseases appear are related to the facilities in a modern home.
和氣喘屬於同一源的異位性皮膚炎、蕁麻疹、過敏性鼻炎等過敏性疾病病人增加、發病年齡下降，就和現代家庭室內建材與擺設有關。