I might just be paranoid but as DS1 starts school in September I'm getting a bit worried about this type of behaviour. Ever since he was a baby, when something really excites him he stares at it really hard and jerks his arms around. I don't think it's a tick but wondered if anyone else had experienced it with their children? Is it something he'll just grow out of? It was really cute when he was a baby but I sometimes worry that it's a sign of something else now. Am I just being silly???