Klaf, I understand your son doesn't have pinworms.
I was just giving an alternative to one-remedy-for-one-aspect-of-your-son's-case. His case wasn't taken --- you were just given remedy suggestions based on -- worms. That isn't enough to prescribe on, imo -- because he is having these others symptoms.

Garlic should be a good alternative, as I posted above. I was just saying it worked with pinworms from my experience. I see no reason why it shouldn't work with these type of worms either. I've also seen the rice-like larva come out in a child's bath -- and in the toilet (after 'going') -- in the same child that had the pinworms (different occasion tho).

Anyhow, try the garlic in the vaseline --- and watch out for any other symptoms like tummy aches, etc --- it's usually an indication if they worms are still lurking (although not always)....

Can you get him to a local homeopath?
If not, make sure whomever takes the case on, actually takes a full case so you can get the best care available for your son.
Best of luck to you. Austin