Anal itching is when the area around and at the edge of the anus becomes irritated and itchy.
There are several reasons why anal itching could occur.
These include:
Causes of Anal Itching
There are several possibilities for why anal itching might occur.

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They include the following factors.
Dietary Issues
Foods that cause gas or problems with digestion could cause anal itching.
Some foods also cause excess mucus, which can also irritate the bottom.
The following foods and drinks could cause anal itching.
They usually go away on their own, or they can be removed by a healthcare professional via surgery.
Your visit may include the following:
Summary
Anal itching can usually be treated at home.
If anal itching doesn’t heal within two to three weeks, seeking medical attention is advised.
Harvard Health Publishing.Anal itching (pruritus ani).
MedlinePlus.Anal itching - self-care.
American Osteopathic College of Dermatology.Itching, anal area.
The American Society of Colon and Rectal Surgeons.Irritable bowel syndrome.
MedlinePlus.Sexually transmitted infection (STI) tests.
National Institute of Diabetes and Digestive and Kidney Diseases.Diagnosis of hemorrhoids.