My ds has autism.. For the past year he has been obsessed with his bottom.. Putting things in it, scratching it.. There was an incident with an electric toothbrush as well.. 
Anyway he's been to the doctors etc and they have wrote it off as being part of his autism and him sensory seeking.. But having joined mumsnet and reading about worms it got me thinking..
I've just been and done the torch test and he's got them :( :( I feel absolutely dreadful.. My poor little boy has been suffering for months and I just listened to the bloody doctors and didn't think any more of it..
Chemist job first thing tomorrow and thank you mumsnet!