I've name changed because I have a feeling my cousin knows my username on here, and this is a very difficult, emotive subject. I also don't know if I'm being unfair or judgemental (I love my family, so if I am, I'll dislike myself even more for thinking these things.)
My cousin's DS is extremely difficult to spend time with. He's just turned 5 and I really struggle when all the kids are playing together. He's very rough, but in a 'loving' way - for example, he'll grab my 3 year old and say he's giving her a cuddle, but he lifts her off her feet and the embrace usually ends with them collapsed in a heap, DD having gotten hurt in the process. He flails around, so other children end up getting clouted by a foot, and throws himself at people (which has regularly resulted in throwing people off-balance and falling over). No amount of asking him to be careful helps, and he doesn't listen to anyone.
He will not stop when asked/told to stop. He is high energy from the moment he gets up to bedtime. My cousin is exhausted as he demands her attention constantly - he won't play alone, he wants her to be involved at all times. He doesn't seem to care how he gets attention - positive or negative. He throws massive tantrums if he doesn't get what he wants. He shouts and yells and generally it's really chaotic. My cousin and other family members try to get him to be careful and be more gentle but he doesn't seem to hear us and if he does, it's ignored.
Is this normal? Do I just not know enough about kids?