I'm worried because my child complains of anal pain every night.

First of all, he is a child with a naturally sensitive temperament.

Even though he is 6 years old, it takes a very long time for him to fall asleep.

When night falls and they try to sleep, they scratch their body because their anus itches.

I can't figure out the reason, no matter what I see.ㅜㅜ

Before, I kept saying my stomach hurt, so I didn't go to daycare and went to the hospital, but the doctor said there was nothing wrong, told me to live a regular life, eat healthily, and finished the consultation.

They also prescribed Bosoong ointment for the anus, but said there was nothing abnormal.

I also tried giving deworming medication, but it was the same.

There are no complaints about such things during the daytime.

I really can't tell if there's a problem or not.

Please advise whether I should go to a large hospital for a check-up.