Hi. Thanks for your query. Noted the history and understood your concerns: Irritation, itching and pain in the upper abdomen with black stools is most probably indicative of bleeding from the gastric ulcer, gastritis, erosion and so on. The most important investigations to be done are as follows: Tests of stool for occult blood in particular. An upper GI Endoscopy. Colonoscopy. CT scan of the whole abdomen in case of ruling out cancer. All these tests will lead to an exact diagnosis to be treated accordingly so that a proper management can be done. Say for example, continue Rabium DSR. Domperidone for motility regulation. Antacid every three hours, particularly when on empty stomach. Further management as per the findings like that of the bleeding.