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What Causes Black Stools?

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Posted on Thu, 13 Feb 2014
Question: I have had black stools for about a week. What could be causing this?
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Answered by Dr. Grzegorz Stanko (5 minutes later)
Brief Answer: Peptic ulcer. Detailed Answer: Hello! Thank you for the query. Black stool is caused by iron supplementation or by bleeding from stomach or duodenum. As you do take Entocort which makes you prone to peptic ulcers, stomach bleeding is the most probable source of this black stool. You may also have upper middle abdominal pain, nausea, vomiting, weakness, pale skin. Please do not ignore it. You should visit your doctor as soon as possible and have gastroscopy done. Hope this will help. Feel free to ask further questions. Regards.
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Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Grzegorz Stanko

General Surgeon

Practicing since :2008

Answered : 5798 Questions

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What Causes Black Stools?

Brief Answer: Peptic ulcer. Detailed Answer: Hello! Thank you for the query. Black stool is caused by iron supplementation or by bleeding from stomach or duodenum. As you do take Entocort which makes you prone to peptic ulcers, stomach bleeding is the most probable source of this black stool. You may also have upper middle abdominal pain, nausea, vomiting, weakness, pale skin. Please do not ignore it. You should visit your doctor as soon as possible and have gastroscopy done. Hope this will help. Feel free to ask further questions. Regards.