We suggest that the nail matrix biopsy is not necessary in onychodystrophy associated with lichen striatus except when a nail matrix tumor is considered in the differential diagnosis.

• 本文强调在诊断初期若怀疑是指甲线状苔藓时，指甲髓质切片是暂不需要的。只有当指甲髓质肿瘤需做鑑别诊断时才需进行指甲髓质切片。