My son has fallen more than 5 centiles and is way off the bottom of the chart at 8.5kg and 75cm tall. He's nearly 2. He's still in size 3-6 trousers, size 3 nappies and 6-9 in tops. He's on track to be about 150cm tall as an adult. He has multiple severe allergies and is undergoing testing for other conditions at the moment. I'm so worried about him! Part of me feels silly because he is a happy, bright, chatty, active little boy who exceeds all developmental milestones except growth. Anyone had a baby who just grew later on!? Or any ideas what could be causing it? Or just slap me for complaining because I know it could be a lot worse!