My brother had an accident when he was 2.5 years old had some veins in brain damaged initially there was no hope of his survival but as time went his health improved just his development is some years behind and he can't speak properly. But still we were happy as he had improved a lot in the following years but since last 6 months or something he has symptoms of hyperactivity as per doctor but the medicine the doctor gave makes him dull and he sleep for almost half a day.