A good place to treat toenail fungus in Busan

Does anyone know of a good place in Busan that treats toenail fungus?

Are there any good hospitals or shops in the Centum area, Yeonsan-dong, or Dongrae area?

I think there are some limitations to managing it at home.

It seems like it's getting better, but it starts again as the nail grows.

It keeps repeating so I'm getting a bit stressed out.