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What is the cause of itching and bleeding from the anus?

Iritation and bleeding from the anal
I am sorry to hear about your symptoms. In order to provide an accurate diagnosis, it will be necessary for you to undergo a thorough physical exam, including a rectal exam. A physician will also need to review your medical history. Therefore, I recommend you schedule an appointment with a gastroenterologist. After an in-person evaluation, this provider can make a recommendation on the next best steps in your management. With any sort of gastrointestinal bleeding, physicians try to determine whether it originates in the upper gastrointestinal tract (such as the stomach and esophagus) or the lower gastrointestinal tract (such as the colon or rectum). It sounds like you are having rectal itching with a small amount of bleeding, which means the source is likely from the lower tract. It is possible either a hemorrhage or a rectal fissue is causing your symptoms, and these can often be managed with conservative measures. It is important to rule out an autoimmune disorder such as Crohn's disease or ulcerative colitis. Other possible causes include a blood vessel malformation, an infection, or a tumor within the GI tract. A physician will need to do a more thorough evaluation to determine the cause in your case, which is why I recommend you see a gastroenterologist.
This answer is for general informational purposes only and is not a substitute for professional medical advice.
If you think you may have a medical emergency, call your doctor or (in the United States) 911 immediately. Always seek the advice of your doctor before starting or changing treatment. Medical professionals who provide responses to health-related questions are intended third party beneficiaries with certain rights under Zocdoc’s Terms of Service.

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