Method 321 cases suffering from abacterial pustulosis in 9 hospitals coming from 7 cities in China were investigated by questionnaire. Multicenter and chance method was adopted . The possible causes were analysed.

• 方法 采用多中心随机方法在全国7个城市9所医院对321例无菌性脓疱病患者进行问卷调查,对可能涉及的因素进行分析。