My son is very reserved, therapist tells us is part of his "fight or fly" sense. He might be sensitive to physical contact which could be greater with strangers. My son is 4 and is not until recent montsh that his has shown emotion on his own, he has always given kisses when asked for it but, now he come and hugs and wants that physical contact. He even uses affection to get what he wants Lol. If your son get upset if yoy try to hug him, he might be sensitive, my son dorsnt like his hair touched, is agonizing for him, (we havent been able to cut his hair for over a year and cant to have anything in his head) .
My suggestion would be for you to show more affection To tour wife or other sibblings in front of him so he can see that affection is good then he might create a positive referrence. Then is just a matter of waiting for him to open up.

I tried a aby brush and everyday I brush him.His back,arms and legs,it calms him

We don't do therapy here in UK probably only in extreme cases, prob because of nhs, going private would probably have option of therapy but private health care is very expensive

My son doesn't understand emotions very well Dr says his emotional age is under 2 , he gets very uncomfortable and doesn't know how to react to anything in the emotional aspect. We are working on this thru therapy and hct services.

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