Daughter is scratching her head and ear, especially at night, she even…

Daughter is scratching her head and ear, especially at night, she even pulls out hair, it's very itchy, she gets agitated. I thought that this was because of sweating, or maybe itchy ears. I looked for information online, they say that this could be otitis, that it's possible that the child has very painful ears. It's been around for about 3 months now with us. I would like to know if anyone had something similar and what turned out to be the cause?