Pulling and itching ears?

My 9 month old daughter has been tugging/pulling and itching her ears quite a bit for probably a few months now. Her pediatrician said they looked fine on a few different occasions now.

I don’t necessarily think it’s hurting her just maybe itchy? She seems relieved when I rub them for her.

I didn’t get to ask the dr what else it could be if they look fine to her? Just curious if it could be something other than an ear infection or if I should worry? I know teething can cause some problems but she still is showing no signs of teeth coming through.