vitiligo vulgaris

例句：

1. 1. He developed vitiligo on his hands and arms.
   他手上和手臂上出现了白斑。
2. 2. The patient was diagnosed with vitiligo and started treatment.
   病人被诊断出患有白斑病，并开始接受治疗。
3. 3. Vitiligo is a chronic condition that can be treated with medication.
   白斑病是一种慢性疾病，可以通过药物治疗。