DS is 21 months old. We have had some concerns as he has very few words/word approximation, and he has been referred for hearing test. However, sometimes I know he hears me but chooses to ignore me. I call his name, see him pause for a moment and then carry on. Sometimes I call him and he'll look round or come to me - but I'd say it's 50:50. He will follow very simple instructions if you get down to his level to ask him AND it's something he wants to do eg he will get his favourite toy, but if I ask him to get his coat he'll just ignore me. I'm not sure whether he knows what his coat/shoes/bag are, but as he is knows the names of his toys like Iggle Piggle, I'm assuming he does understand. Should I be concerned? I see others his age who follow instructions a lot more, he'll only follow mine if it's of interest to him!
For background, he has hit all his other milestones around the right time. Points, claps, waves goodbye, has great eye contact, plays hide and seek, lots of imaginative play (pretending to drink and eat food, offering me his pretend drinks/food/phone), plays with toys appropriately.
Interestingly he will come and tap me though to get my attention rather than say mumma/mum. He would never ask for drink, but would point when he wants it. However he will shout cars when he sees them. He babbles and chatters constantly and it seems to follow conversations patterns.