My 2 year old son had his 2 year old check up today and he has always been below the 5 percentile for weight and a little above the 75 percentile for height. and is has always followed a curve. Well, since his last check up at 18 months, he has only gained 1 1/2 pounds and a 1/2 inch in height and the doctors want him back in 2 months to measure him again. they told me that if the is just a little or no change, then they will do some blood work to see if there is an underlying condition. they asked me if he was active and I told them not really. He doesn't like to play at parks becuase they just dont interest him that much. In nursery at our church, they tell me that he usually sits or lays by himself and plays alone or doesn't play at all. But when he is out of nursery he LOVES to run around and talk to the older kids ( so its not like he is not interested in kids completely,right) The doctors also said that it is abnormal for a boy his age to sit through a 2 hour movie and pay attention to it. They gave him a development screening because they think that maybe delays are associated with his poor growth but he has the intellegence and attention of a 4-5 year old. He shows no signs of autism spectrum. so my guess is that he just hangs out with him self in nursery becuase he doesn't want to play with kids his age. but has anyone had this issue with weight and height and what did you do to help your little one?