Minimal erythema dose (MED) for both UVA and UVB were tested. Bivariate correlation analysis of all PMLE patients did not show a positive correlation between MED--UVA and MED-UVB as in the healthy controls.

• 分别测定其对UVA和UVB的最小红斑量（MED），双变量相关分析示在PMLE及其五个亚型中缺乏正常对照组中存在的正性相关关系。