医生 / 提醒 / 他 / 不要 / 抓挠 / 湿疹 / 患处 / 以免 / 留下 / 疮痕

医生提醒他不要抓挠湿疹患处，以免留下疮痕。

The doctor reminded him not to scratch the affected areas of his eczema to avoid leaving scars.