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    WebMD Symptom Checker

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    WebMD Symptom Checker

    Black (tar) colored stools, Constipation, Difficulty starting urine stream and Frequent nighttime urination

    WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms black (tar) colored stools, constipation, difficulty starting urine stream and frequent nighttime urination including Gastrointestinal bleeding, Medication reaction or side-effect, and Constipation (adult).

    There are 42 conditions associated with black (tar) colored stools, constipation, difficulty starting urine stream and frequent nighttime urination. 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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