Rectal bleeding
Hello, doctor.
A few weeks ago and again today, I experienced diarrhea, and after using the toilet, I noticed fresh blood in the bowl.
However, I do not have any pain in my anus or abdomen.
After cleaning myself, there was no blood, and everything seemed normal.
I had a health check-up last August, and everything was fine.
What could be the likely causes of the bleeding during these two episodes of diarrhea?
§, 10~19 year old female. Ask Date: 2024/01/04
Dr. Zhang Shuhao reply Surgery
There are three common causes of rectal bleeding: 1.
Anal fissures or skin irritation leading to bleeding, characterized by a small amount of blood accompanied by a sharp pain at the site of the wound.
2.
Ruptured thrombosed hemorrhoids, which typically produce slightly more blood than the first cause, usually occurring after straining during bowel movements, and may be painless or cause only mild discomfort.
3.
Gastrointestinal bleeding related to conditions such as polyps, ulcers, or tumors, which tends to be darker in color and may be associated with changes in bowel habits or abdominal symptoms, though it is less common in younger individuals.
Based on your age and symptoms of diarrhea, causes 1 or 2 are more likely.
Taking warm sitz baths and reducing irritation to the anal area can gradually alleviate the symptoms.
If you are genuinely concerned about gastrointestinal issues, you may also consider discussing with a gastroenterologist or a colorectal surgeon about the possibility of scheduling a colonoscopy.
Reply Date: 2024/01/04
More Info
Understanding blood in stool can be concerning, and it’s important to approach this issue with careful consideration of potential causes and implications. The presence of bright red blood in the stool, particularly when associated with diarrhea, can arise from various conditions, some of which may require immediate medical attention.
1. Hemorrhoids: One of the most common causes of bright red blood in the stool is hemorrhoids. These are swollen veins in the lower rectum or anus that can bleed during bowel movements, especially if there is straining involved. However, hemorrhoids typically cause blood on the toilet paper or in the toilet bowl rather than mixed with the stool itself.
2. Anal Fissures: Similar to hemorrhoids, anal fissures are small tears in the lining of the anus that can occur during bowel movements, particularly if the stool is hard or large. They can cause sharp pain and bleeding, but often the bleeding is minimal and bright red.
3. Gastrointestinal Infections: Infections caused by bacteria, viruses, or parasites can lead to diarrhea and may also cause inflammation or ulceration in the intestines, resulting in blood in the stool. Common infectious agents include E. coli, Salmonella, and Shigella. If the diarrhea is accompanied by fever, abdominal cramps, or vomiting, it may indicate an infectious process.
4. Diverticular Disease: Diverticulosis and diverticulitis can also lead to bleeding. Diverticulosis involves the formation of small pouches in the colon wall, which can become inflamed or infected, leading to diverticulitis. This condition can cause abdominal pain, fever, and changes in bowel habits, including blood in the stool.
5. Inflammatory Bowel Disease (IBD): Conditions such as Crohn's disease and ulcerative colitis can cause inflammation of the gastrointestinal tract, leading to symptoms like diarrhea, abdominal pain, and blood in the stool. These conditions are chronic and may require long-term management.
6. Polyps or Colorectal Cancer: While less common in younger individuals, polyps (growths on the lining of the colon) can bleed, and in some cases, they can be precursors to colorectal cancer. If blood in the stool persists or is accompanied by other concerning symptoms, further evaluation may be warranted.
Given that you mentioned having diarrhea with blood but no associated pain, it is crucial to monitor your symptoms closely. The absence of pain is a positive sign, but it does not rule out the need for medical evaluation. Since you had a health check-up last August with no issues, it is possible that the current symptoms could be related to a transient condition, such as an infection or dietary indiscretion.
Recommendations:
- Seek Medical Attention: It is advisable to consult a healthcare provider, especially if the bleeding recurs or if you experience other symptoms such as fever, significant weight loss, or prolonged diarrhea.
- Keep a Symptom Diary: Documenting your symptoms, including the frequency and characteristics of your bowel movements, any dietary changes, and associated symptoms, can help your healthcare provider make a more accurate diagnosis.
- Avoid Self-Diagnosis: While it’s helpful to understand potential causes, self-diagnosing can lead to unnecessary anxiety. A healthcare professional can provide a thorough evaluation, which may include a physical examination, stool tests, or imaging studies if needed.
In conclusion, while there are several potential causes for blood in the stool, many of them are treatable. Prompt medical evaluation is essential to determine the underlying cause and to initiate appropriate management.
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