Could this Aspergers or ADD? Please help!

I have a 4 year old step son who has been displaying signs and behaviors that we find concerning. First, he constantly has to have something to say, if he can't think of anything to say he just says "daddy?" "yes?" "I love you". This happens at least 14 plus times a day. He also makes random noises all the time. He does it during play which is fine but he does it in the car, in bed, at the table. It's like an impulse he can't control. It's not words, just noises. He is bossy with our 6 year old to the point she will no longer play with him. She tries and after a while says: "your being bossy and I am not going to play with you" and walks away. He dosen't pick up body language or verbal social ques. He will go on and on about a transformer, this is generally a one sided conversation and even if you try to change the subject he often seems as if he never heard you or disregards it. He also constantly wants to be near his dad, sit in his lap (this is 60 pound child) andtouch him, kiss him or sit next to him but has to be touching. He has tons of attention and affection and we can't figure out the constant craving for daddy. Also, he dose this in public, espescially in new places. He won't sit and be still has has to get up and try to run to daddy and climbin his lap, even at the doctors. He has no regard for personal space and gets inches from your face during converstation or play. He constantly interupts our conversations and has no regard for the fact that he just did something rude. When other children are hurt or crying he doesn't ask why or feel any empathy towards them. If you tell him to throw out a toy he says ok and throws it away, even his favorite Iron man. But if he feels his feelings are hurt he cries in an instant and its a loud sob. When he gets excited he flaps his hands and looks like he's trying to have mini wings. We tell him "you are not a bird. Stop flapping" and he dose. He dose this anywhere but at day care. They have never seen that from him or the sounds he makes, but as soon as he gets in the car it's NON-STOP. He pays little to no attention to his surroundings either. Just the other day in the grocery store, we had walked a good 50 feet away and it was then that he noticed we were gone. He then ran to catch up and ran past us with no mind to others in the store. He asks for things repededitly even after be given an answer. Can I play the Wii (electronics have become somewhat of an addicition to him) and we say no. Less than 5 minutes later he asks again and can tell us what we said before and this battle will continue heavily for at lest 45 minutes then slow down, but he will continue to ask throughout the remainder of the day. I love him very much and it kills me to think there may be something medically wrong with him but at this point I feel thats what we are looking at. It's exhausting, frustrating and worrisome. He is so bright and happy (all the time, almost excessively, even during punishment) and loving. We just want some answers or helpful tips on what this may be or how to better handle it.

[Cat28CFC]

Hi there ,i read your story there & i had to reply , my son is 5 & is currently being asessed for aspergers & some of the things that your boy does is the same as my boy. my son constantly talks & tells me he loves me , its like he can't be quiet & he also makes strange noises , he will scream for no reson & he does it in mine & his brothers face all the time. When he is playing things have to be done his way  or he will go mad which enoys his brother. He is a nightmare at the shops , he will walk along the isles rubbing his arm on the shelfs & he constantly walks away . My son is a very bright boy & is really good with numbers but sometimes he asks daft questions which have no answers, he hugs all his friends & he has been trying too hug his teachers. He also doesnt relise when his brother is hurt , i could be trying to sort out a crying brother who has a burst lip or somthing & he will still talk over me & ask for things as though his brother wasn,t even there. Electronics have become somewhat of an addicition for him too & he constantly asks to play the wii, he is very good with computer games & would play it all day if he could but he gets really mad & iv seen him scrach & hit himself . He also ignores me all the time & isn't very good at looking at people, sometimes i feel like im alway saying dont shoutin my face & look at me or stop jumping around ect. i think that maybe you should get your son tested for aspergers , his behavour sounds  like  my sons & help just now is better than people thinking that he's being rude when he's not. My boy is a lovely sweet wee boy & if he has aspergers then i will do what ever i can to help him throughout his life, to make sure he is a happy boy