Generally speaking, paronychia is caused by ingrowth of toenails, which is a common nail growth state, basically hereditary, not a disease.
Incorrect pruning methods and inappropriate pruning tools are important reasons for inflammation and aggravation of the disease. /You can buy a brand patent product specially developed by Kejia Bao Xiao for this kind of nails from Taobao, and the thorn can be removed in 2 minutes. Don't forget me.