my son is 6 and is uncircumcised. Lately he has been pulling on his penis a lot and when I asked him, he says that it itches. I have him pull back the foreskin and wipe with a washcloth to clean it in the bathtub, although I notice that it does not pull back completely past the edge of the head (near the shaft) and that there seems to be some white build up. I am wondering if that is what is itching and if I should encourage him to wash a little more aggressively. It seems almost like the foreskin is stuck to the edge of the head with the white stuff.