I used the Emla patches with DD1 as I know what she is like. She is likely to get nightmares etc when she is worried so I didn't build it up, just said that we would put the special patches on and it wouldn't hurt. She didn't feel a thing! She had seen DD2 get her immunisations and cry so she had been anxious and it really helped. Now she isn't worried about needles at all - if I hadn't done it then I think she would have developed some anxiety about them if that makes sense.