DS will be 4 in August - he is bright - has known his numbers for a long time, knows his colours, alphabet etc. He loves his songs and sings all the time (almost to replace conversations). He knows all his animals etc and remembers most objects etc. The problem is that he can't seem to hold a conversation with anyone (people talk to him and he just ignores them). He has started to have lots of tantrums (I think from frustration)and makes up swear words (first was dumbdangs!) sometimes watermelon etc - very random. He also does a lot of breathing like he is running out of breathe and we wonder if this is stress related. So worried - we have requested that he be held back a year from school as he really wouldn't cope. He doesn't seem to know how to relate to things (ie he wouldn't understand about going to school etc). Anyone know of someone to see in London who may be able to assess him??