(Concern) Middle school child with ingrown toenailㅠ

Since when, my child's toenail has been turning into an ingrown toenail.

My toenails were perfectly normal until I was in elementary school, around the lower grades.

Then one day, I suddenly felt extremely pain.

So I saw that it had become like an ingrown toenail.

As the child grew up and started washing and doing things on their own, I wasn't able to observe closely.

Whenever the nail gets a little longer, it hurts him, so he keeps cutting and cutting it.

I'm cutting my toenails too deeply into the nail bed, and it's becoming a vicious cycle.

What kind of treatment do they provide when you go to the hospital?

I'm not sure exactly which hospital I should go to.

Dermatology? Orthopedics?

Are there any good methods for people with ingrown toenails?