The proctal or anal aperture is itched

[M.S.]

Hello, the doctor! At me week two the proctal or anal aperture in the afternoon, is itched in the evening. And the itch amplified. To me have advised provit Vermoxum (from worms). I have spent on drink it or him three days. But the result is not present.: (all only became worse. I test inconveniences, a dyscomfort constantly. Advise what to do or make, please.