Brothers with Down Syndrome.

[FlawlessHappiness]

AVPD represent.

Do they show any particular signs of any other disorder? OCD, ADD/ADHD perhaps?

Not exactly. Usually they're slow in their movement... (Not very slow, just a little slower than what we're like).

But, they do have a kind of autism.

My real brother always does what he usually does. Then it's really exciting when he decides to try something new, fx. eat something he usually didn't want.

My other brother's autism is a little stronger, which sometimes gets a little scary.
He needs everything to be as it always is (Though it isn't like that always).
If things change too much he starts to have these reactions.
The reactions also seem to happen when a lot of people are around him (Which is also unusual).

These reactions are different...

Sometimes he feels like he has to do something to really attract the attention. This can be from pushing somebody, to grabbing a glass and dropping it on the ground so it breaks.

The problem with this is you can't tell him it's wrong. He will not understand it. He only understands it as a reaction from the others, which was what he wanted. A reaction. An emotion. If you yell at him, which people have done before, he starts yelling at himself. And that we can't do anything about either.
The best reaction is to not do anything but take things calmly.

The worst reaction I've encountered is when we were sitting at the dinner table and I was sitting next to him. He threw a fork at me... Fortunately I had my head turned so he hit my ear... Started bleeding a little but it wasn't anything special... It's just the thing that he starts throwing things, like forks or knives. He still does that... but what can we do? It's only when he is in that mood... I just don't like sitting beside him anymore...