leucoderma

例句：

1. 1. The patient's leucoderma had been improving after the treatment.
   患者的皮肤红斑在治疗后有所改善。
2. 2. The doctor diagnosed her with a mild leucoderma.
   医生诊断她患有轻微的皮肤红斑。
3. 3. The rash was caused by an allergic reaction to the medication.
   皮疹是由药物过敏反应引起的。