Hello, everybody

I was hoping that someone on here can help me. My son has had two head injuries two months apart. With the last concussion he blacked out and came to mins later. My son has had seizures, But, all of the test have come back normal.(MRI,EEG,CT scan) I son has the mood problems and headaches, sleep problems and very sensitive. He now faints. Sometimes severe times a day. He's hitting his head and hurting his self even more. I know that PCS can take a while to heal from. But, no where can I find that people faint after a couple concussions. How any of you fainted or know someone who faints after a concussion? If so what did you do for it? What was your diagnoses? My son has seen Neurologist, but still I have no answers. I NEED TO KNOW HOW TO HELP MY SON, HE ONLY 8 AND HIS LIFE NOT THE SAME BECAUSE OF THIS. PLEASE HELP.