Bleeding from Hemorrhoids: Infection Risks and Concerns - Surgery

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Rectal bleeding


Thank you, doctor, for taking the time to respond.
I am the person who asked question 194156.
Regarding my third question, I meant to ask: when an internal hemorrhoid ruptures and bleeds, isn't there a wound? When feces pass through or in the case of bacterial invasion from the anal canal, could an infection occur? My brother had an abscess and a fistula many years ago, so I worry about the possibility of infection when I see blood in the stool.
The previous response from the doctor stated that "an anal fistula is a complication of an anal abscess and is not related to hemorrhoids," which is why I have this concern.

A-Kai, 40~49 year old female. Ask Date: 2023/03/14

Dr. Ke Fangxu reply Surgery


The anal area is not a sterile environment, and the presence of bacteria is normal.
However, because healthy individuals have an immune system, bleeding from hemorrhoids typically does not lead to infection.
Anal abscesses are mostly caused by deeper infections, and patients with compromised immune function are considered a high-risk group.
Generally, healthy individuals do not need to worry excessively; in fact, worrying is often unhelpful.

Reply Date: 2023/03/14

More Info


When it comes to understanding bleeding from hemorrhoids and the associated risks of infection, it is essential to consider several factors regarding the nature of hemorrhoids, the potential for injury, and the risk of infection.

Firstly, it is important to clarify what hemorrhoids are. Hemorrhoids are swollen veins in the lower rectum and anus, similar to varicose veins. They can be classified as either internal or external. Internal hemorrhoids are located inside the rectum and are usually not visible, while external hemorrhoids are located under the skin around the anus and can be seen and felt. When these hemorrhoids become irritated, they can bleed, especially during bowel movements.

Now, regarding your concern about the risk of infection when an internal hemorrhoid ruptures and bleeds: yes, when a hemorrhoid ruptures, it can create a small wound or tear in the tissue. This injury can potentially allow bacteria from the stool or the anal area to enter the bloodstream or surrounding tissues, leading to an infection. However, the risk of developing a significant infection from a ruptured hemorrhoid is generally low, especially if proper hygiene is maintained.

In your case, since you mentioned a family history of abscesses and fistulas, it is understandable to be concerned about the potential for infection. It is crucial to keep the anal area clean and dry. After a bowel movement, gently clean the area with mild soap and water, and avoid using harsh wipes or products that could irritate the skin. If you notice any signs of infection, such as increased redness, swelling, warmth, or discharge from the area, or if you develop a fever, it is essential to seek medical attention promptly.

Moreover, if you are experiencing bleeding from hemorrhoids, it is advisable to consult with a healthcare professional. They can perform a thorough examination to determine the cause of the bleeding and recommend appropriate treatment options. Treatment may include dietary changes to increase fiber intake, topical treatments to reduce inflammation and discomfort, or in some cases, surgical interventions if the hemorrhoids are severe or recurrent.

In summary, while there is a potential risk of infection when a hemorrhoid ruptures, maintaining good hygiene and monitoring for any signs of complications can significantly mitigate this risk. If you have ongoing concerns or experience recurrent bleeding, it is best to consult with a healthcare provider for personalized advice and management.

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