Yeah. My oldest son went through much of what you described when his Dad died. He was in counselling of course but it never really shifted. In HS, he was diagnosed with a type of ADHD but he had the other things I mentioned too. Some of what he was dealing with have been attributed to this strain of ADHD, others were the grief process and some of it, is a bit of both. But the things I asked are very common in ADHD so it's highly unlikely that he'd have none of those common signs if this was the issue.