what would make your stool dark
Black (tar) colored stools and Diarrhea. WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms black (tar) colored stools and diarrhea including Gastrointestinal bleeding, Medication reaction or side-effect, and Food poisoning. There are 47 conditions associated with black (tar) colored stools 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.