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n.皮肤划痕现象，皮肤划纹征
1、Study the relationship between allergic skin diseases and allergen in 3 kind of chronic urticaria, chronic eczema and dermographism.───探讨慢性QianMaZhen、慢性湿疹、皮肤划痕症3种变应性皮肤病与变应原的关系。
2、study the relationship between allergic skin diseases and allergen in 3 kind of chronic urticaria, chronic eczema and dermographism in order to provide the important instruction basis. ?───探讨慢性QianMaZhen、慢性湿疹、皮肤划痕症3种变应性皮肤病与变应原的关系，为患者的脱敏治疗及预防提供指导依据。