I am sorry to hear about your symptoms. Rectal bleeding
is always a concerning symptom. I strongly encourage you to either present to an emergency room or an urgent care center. This may represent life threatening bleeding, and it is important for someone to quickly assess the degree of bleeding and determine the next course of action. After being seen in an emergency setting, you may require further evaluation by a gastroenterologist.
Dark, tarry stool is often referred to as melena. This often represents blood that originates in the early part of the gastrointestinal tract and then undergoes changes with digestion. This ultimately gives it the dark color when it passes through the rectum. Sources of bleeding can include esophageal varices, which are common in patients with cirrhosis. You could also have an ulcer
in your stomach or duodenum. A blood vessel malformation, or arteriovenous malformation, can cause bleeding. Additionally, a tumor can lead to bleeding. A classic mimic of melena is a diet high in beets.
After assessing your vital signs and lab work to assess the degree of bleeding, you may need to take proton pump inhibitors in order to decrease acid production in your stomach, as this can increase bleeding. You may also need to undergo endoscopy, which is when a camera is passed into your stomach to determine the cause of bleeding. I encourage you to see a physician as soon as possible.