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倒刺是什么原因引起的? Q:我的宝宝7个多月,手上总是有很多倒刺。请问是什么原因引起的?会不会是跟缺少某种维生素有关?该如何治疗?山西小郑
What is the cause of barb? Q: My baby is more than 7 months, there are always a lot of barbs in my hand. I ask what is the cause? Will it be related to the lack of a vitamin? How to treat? Shanxi Xiao Zheng