My grandson, 8 years old, has had a sudden change in behavior over the past year. He s become angry, saying we re making fun of him, got in trouble in school last year (doing better this year, but still a very unhappy child), wants only to read or play video games, does not want to interact or be touched. He s disrespectful when talking to an adult, taking any question they might ask as an affront of some kind. He used to be a happy child, loving to tell you what he has just learned or read. He didn t like his teacher last year, which might have had some bearing on his changed behavior, but it seems he should be over it. I m wondering about some kind of neurological disorder.