The perianal skin is sensitive and is susceptible to injury and damage fromdiarrhea, constipation, and disease.
Irritation to the perianal area can occur with persistent diarrhea.
The diarrhea itself may be caustic andburn the skinand repeated wiping with toilet paper can cause further trauma.

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Treating the diarrhea and then keeping the area clean and dry areimportant for healing the perianal skin.
This article discusses the diseases and conditions of the perianal area and when you should see a healthcare provider.
What Is the Difference Between Perianal and Perineal?
A physician will want to do a physical exam and potentially a rectal exam to see what’s happening.
This is especially true for people who have IBD, and in particular, Crohn’s disease.
Abscesses in the perianal area are usually treated by draining them and then antibiotics may be given.
Summary
The perianal is the outside area around the anus, specifically the skin.
If the area is irritated or painful, try soaking it in warm water.
National Institute of Diabetes and Digestive and Kidney Diseases.Symptoms & causes of hemorrhoids.
National Institute of Diabetes and Digestive and Kidney Diseases.Definition & facts for Crohns disease.
2021;44(11):1383-1388. doi:10.1016/j.asjsur.2021.03.013