I am a father of a 26 weeker. My son had a relatively easy but lengthy stay at the hospital last year after his early arrival. Since then he's been pretty much right on track in all areas of development. Now he's just over 18 months old and just yesterday my wife saw my son start shaking his head in a weird way as if he was saying "no". She was very concerned but we weren't super alarmed at the time. Today my son did the same thing a bit before his nap and then did 2-3 times in the evening. The head shaking only seems to last for a few seconds and because of that I haven't really had a chance to determine if he's spacing out or if he'll still respond to us while he's doing it. Other than that he's just about caught back up with normal 18 month old kids at this point. He runs all around the house all the time, has a huge vocabulary, and does almost anything non-preemie 18 month old kids do. My wife and I have put in a call to his early on development nurse but all of the internet searching we've done on this topic seems to indicate autism which has sent us both into a state of panic. I was wondering if anyone had noticed anything like this with their child and what the outcome was.