What is a common symptom of an anal abscess?

An anal abscess is characterized by the collection of pus that occurs in the tissues surrounding the anus, often as a result of infection. One of the hallmark symptoms of an anal abscess is pain and swelling near the anus. This occurs because the body responds to the infection with inflammation, leading to localized discomfort and noticeable swelling. The pain can be quite severe and is typically exacerbated by activities such as sitting, walking, or having a bowel movement, making it a significant symptom for patients.

The other options may be encountered in different gastrointestinal issues or conditions, but they do not specifically align with the common presentation of an anal abscess. For instance, while constipation may occur in certain cases, it is not a defining characteristic of an abscess. Similarly, while severe itching and bloating may present in other anorectal or gastrointestinal disorders, they are not typical symptoms associated with an anal abscess. Thus, the presence of pain and swelling near the anus is a direct indication of the condition, making it the correct response for identifying the common symptom of an anal abscess.