DS aged 2.5 has complained of a sore bottom and is off his food a bit. Last night he managed to escape from his nappy and seems to have been itching. I thought he'd had a bit of very localised nappyrash but with hindsight it could have been where he's scratched.
Anyway I was changing him tonight and there were little white dots around his anus, about the size of a sesame seed. Having googled, it said that worm eggs could only be seen under a microscope but these were much bigger. What is it?