Rectal Bleeding: Causes and When to Seek Help - Surgery

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Rectal bleeding can be a concerning symptom, and it's understandable that you're feeling anxious about it, especially given your recent dining experience. There are several potential causes of rectal bleeding, and it's important to approach this issue with a clear understanding of what might be happening.

One of the most common causes of rectal bleeding is hemorrhoids, which are swollen veins in the rectum or anus that can become inflamed or rupture, leading to bleeding. This is often accompanied by discomfort or itching, but it can occur without significant pain. Another potential cause is anal fissures, which are small tears in the lining of the anus that can occur due to passing hard stools or straining during bowel movements. These can also lead to bleeding and are often associated with sharp pain during and after bowel movements.

Infections or inflammatory conditions, such as diverticulitis or inflammatory bowel disease (IBD), can also cause rectal bleeding. Diverticulitis occurs when small pouches in the colon become inflamed or infected, while IBD includes conditions like Crohn's disease and ulcerative colitis, which can cause inflammation and ulceration in the gastrointestinal tract. Additionally, gastrointestinal infections, particularly those caused by bacteria or parasites, can lead to bleeding, especially if accompanied by diarrhea.

In rare cases, rectal bleeding can be a sign of more serious conditions, such as colorectal polyps or cancer. While these conditions are less common, they are important to consider, especially if you have risk factors such as a family history of colorectal cancer, age over 50, or other gastrointestinal symptoms.

Given that you recently consumed raw fish, it's worth noting that foodborne illnesses can also lead to gastrointestinal symptoms, including diarrhea and bleeding, although this is less common. If you suspect that your bleeding may be related to food consumption, it is advisable to monitor for other symptoms such as abdominal pain, diarrhea, or fever.

When it comes to seeking help, it is generally recommended to consult a healthcare provider if you experience rectal bleeding, especially if it is persistent, accompanied by other symptoms (such as pain, changes in bowel habits, or weight loss), or if you are feeling faint or lightheaded. A healthcare provider can perform a thorough evaluation, which may include a physical examination, a review of your medical history, and possibly diagnostic tests such as a colonoscopy or imaging studies to determine the cause of the bleeding.

In summary, while rectal bleeding can be caused by a variety of conditions, many of which are benign, it is crucial to take it seriously and seek medical advice. Early evaluation can help identify the cause and ensure appropriate treatment, reducing the risk of complications. If you have not yet done so, I encourage you to schedule an appointment with your healthcare provider to discuss your symptoms and any concerns you may have.