Kids are funny little things. There are some of them who will never let you do a peaceful exam no matter what you do, you are a scary stranger doctor. I find most kids have a little stranger anxiety and if I go from talking across the room and approaching and then start touching and examining them, they really don't like that. I usually sit next to them while I'm talking to the parents, and have my hands on the bed or somewhere within reach. I sometimes will touch their hand or ask them questions or make fun comments during the interview so they know I'm a friend. Usually this is enough go gain enough trust for a relatively quiet exam but like I said, some kids are very difficult no matter what you do.