What Causes Vision And Hearing Problem In A Child?

Hi, I am trying to figure out what is going on with my 11 year old daughter. She has been having brief episodes where she is a little spacey , sometimes her vision fades dark, sometimes her hearing fades during an episode, she sees visual distortions, face feels hot, feels like she thinks what is happening is real, but then she can t believe it s real. It s like a memory. She knows it is happening but doesn t know how to stop it. It happens a lot at school. She thinks light sometimes triggors it and loud noise.