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    WebMD Symptom Checker

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    WebMD Symptom Checker

    Black (tar) colored stools, Change in bowel habits, Constipation and Diarrhea

    WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms black (tar) colored stools, change in bowel habits, constipation and diarrhea including Gastrointestinal bleeding, Irritable bowel syndrome, and Medication reaction or side-effect.

    There are 68 conditions associated with black (tar) colored stools, change in bowel habits, constipation and diarrhea. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.

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