The anus itches and cannot be scratched. Many diseases also exist.

Hemorrhoids

When I was a high school student, the students in the studio gathered around the teacher to make painting demonstrations. I didn't like noise, so I sat quietly at the end. (William Shakespeare, Hamlet, high school students, high school students, high school students, high school students, high school students, high school students, high school students) but at this time, I saw an incredible scene. A schoolgirl always scratched her hand in the middle of her ass. Just a minute. Ten minutes later, she shaved. I was worried about her and others' embarrassment, but the place where she was scratched was too embarrassing, and I didn't remind her. Later, I learned that it was anal pruritus in clinic.
Many people think that anal itching is not a problem. Just scratch it or not. I thought so before I studied medicine, but itching after I studied medicine ruled out being bitten by mosquitoes. Most of them were infected.
But in life, many people don't pay attention to anal itching. Itching due to excessive sweating or accumulation of secretions. One of the reasons. Just wash it and pay attention to hygiene. However, in addition to hygiene factors, anal itching is also a symptom of some diseases. Little itch, big health risk. (David Asher).
Anal pruritus
So, what diseases can cause anal itching?
1. Parasites. When there are mites, de insects, aphids, trichomonads and other parasites, you will feel obvious itching.