Medically reviewed by Kumkum S. Patel, MD Black poop, or melena, can happen when there is bleeding in the upper digestive ...

It is possible to have a stomach virus without vomiting or diarrhea. This can happen if a person contracts the virus but does not develop symptoms or only has mild symptoms. Several viruses can ...

If varices are causing your black poop, you might also have symptoms such as: Vomiting blood Dizziness Fainting Bleeding in your esophagus is an emergency that requires treatment in a hospital.