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What Causes Black Stools?

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Posted on Fri, 20 Jun 2014
Question: i had severe diarhea and vomiting now my stool is black. Why?

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Answered by Dr. Grzegorz Stanko (10 minutes later)
Brief Answer:
Bleeding from stomach.

Detailed Answer:
Hello!

Thank you for the query.

If your stool is black like a tar and you do not take iron supplements, bleeding from peptic ulcer (or even stomach cancer) is causing it. Please do not wait any longer and consult your doctor as soon as possible.
Blood work and gastroscopy are necessary.

Hope this will help. Feel free to ask further questions.
Regards.
Note: For further follow-up it is advisable to consult an emergency medicine specialist. Click here.
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 : 5795 Questions

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What Causes Black Stools?

Brief Answer: Bleeding from stomach. Detailed Answer: Hello! Thank you for the query. If your stool is black like a tar and you do not take iron supplements, bleeding from peptic ulcer (or even stomach cancer) is causing it. Please do not wait any longer and consult your doctor as soon as possible. Blood work and gastroscopy are necessary. Hope this will help. Feel free to ask further questions. Regards.