There are three reasons why dogs suffer from paronychia. One is fungal infection. In this case, a skin examination can be performed to determine whether there is paronychia caused by fungal infection. If it is caused by fungal infection, you can Treat with relevant drugs under the doctor's advice; the second is bacterial infection, in which case it is recommended to conduct a drug sensitivity test and then undergo diagnosis and treatment; the third is abnormal nail development, which is caused by congenital genetics or subsequent factors. Nail development changes require surgical treatment.