Abstract：
Retronychia is commonly underdiagnosed and exhibits classic features of proximal nail fold elevation and nail plate layering. Herein we summarize the literature and discuss cause, diagnosis, and treatment of this condition.
摘要：
甲沟炎通常诊断不足，并表现出近端指甲褶皱抬高和指甲板分层的经典特征。在这里，我们总结文献，讨论原因，诊断,和治疗这种情况。
