Is there a place that specializes in ingrown toenail care?

My son's toenail has been like an ingrown toenail for some time.

They say it will grow.

I left it untreated for a while, but I also provided treatment.

Should I go to the nail salon?

I don't know if I need to go to the hospital.

Are there any patients receiving treatment?

The photo might look a bit dirty to viewers, so I won't attach it.