I think the charts can be very scarey if not used properly. They have to provide one among many bits of information in order to provide an overall picture - not be the only basis for a decision.
Interestingly, my ds1 has always been somewhat behind his peers in his motor skills. But he gets there in the end, adn in any case we have always assumed that, as he is within the normal spectrum of ability, he is one of those children that can either do one thing or another - and his thing is brainyness.
Ooooh Centiles drive me mad! I know so many people who have stressed about them for ages - me included. My DS (5mo) is between 91st and 98th centile in height, 50th in weight and 25th in head circ (tall and thin like I once was before having DCs !). When he went for his 6 month check they worried me sick about his head circ and questioned whether he had a small fontanelle (there's a frantic post from me on MN somewhere!). When I went back at 8 weeks, after worrying constantly for 2 weeks, they said there was no problem at all. IMO, surely if a baby is very tall but of average weight, then it makes sense proportionally that the head will be average or below??? I think the main issue is that there is steady growth. I also totally agree with MrsBadger, that measurements for height (AND head circ) are not exact in a baby! My HV reckoned my DS's head had shrunk at the time of his 6 week check!!!
Crazy isnt it.. but as dd has other problems going on bit concerned. as the paeds have the dont want to worry you yet approach. so have said to me well nothing, but organized all sorts of tests. I would just rather Know what it is that they are looking for.
ooops - meant 6 WEEK check not 6 month! Fluffy - I would imagine they are looking to see if there is a steady growth. When I had the issue at 6 weeks, and did a bit of internet research (big mistake if you are trying not to worry about something!), I found that conditions that are being investigated as a result of head circ queries either relate to very big or flat heads, or small heads where there is little or no growth over a period of time.