My son has a button phobia, whereby he cannot bare them on any clothes. At first I didn't realise why he had such an aversion to certain items of clothing but as he's got older he's been able to vocalise it. What's interesting is that the horror is graded depending on the type of button that he is faced with. Ie a large wooden button is preferable to a clear, school shirt type, which he can't go near. I have heard of this before, but am wondering if anyone else has come across this with their children and whether it was something that they grew out of.