A perirectal abscess is a collection of pus that forms in the tissues around the rectum and anus. It happens when a small gland near the anus gets blocked and becomes infected. This infection can occur on its own, but certain conditions increase the risk. People with inflammatory bowel diseases like Crohn’s disease, or those who experience trauma or injury to the anal area, are more prone to developing an abscess. In some cases, sexually transmitted infections can also lead to infection in the rectal area.
What is a Perirectal Abscess?
A perirectal abscess is a collection of pus that forms in the tissues around the rectum and anus. It happens when a small gland near the anus gets blocked and becomes infected.
Why Does It Happen? (Causes)
A perirectal abscess usually occurs when one of the small anal glands becomes blocked, allowing bacteria to grow and form an infection. This bacterial buildup is the most common cause. Certain conditions can increase the risk, such as inflammatory bowel diseases like Crohn’s disease, which create chronic inflammation in the rectal area. Trauma or injury to the anus can also introduce bacteria and lead to infection. In some cases, sexually transmitted infections may contribute, although this is less common. People with diabetes or a weakened immune system are at higher risk because their bodies are less able to fight off infections, making abscess formation more likely.
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