A perianal abscess is a painful, pus-filled infection that develops near the anus due to blocked anal glands or bacterial infection. It often causes redness, swelling, and severe pain, especially while sitting or passing stool. If not properly treated, usually via drainage, it may lead to a fistula. An anal fistula is a small, abnormal tunnel that forms between the skin near the anus ... https://metropilesclinic.com/