IMHO, these 'glitches' in communication appear to be just that - second language differences. (I work with many who are second-language learners and I am such a learner myself.) Add to that the fact that writing is the most advanced level of communication and the last to develop usually and one can really appreciate this poster's hard work and determination to help himself (as we are all striving to do with matters of parasite eradication). Also, this poster seems desperate. Imagine having the courage to try to reach out to others in a language not your own (that you are still developing) about this 'icky' subject! It takes a lot to 'put yourself out there like that'. Good on him!
Unfortunately, I have not had experience with pin worms, so I can't add anything other than to ask anyone with any ideas to help this poster and wish him good luck in finding, if not a cure, some level of diminished symptoms. All of this is very hard and stressful work for all of us.