Suspected gastrointestinal bleeding refers to signs that blood may be originating somewhere in the digestive tract. This page summarizes common warning signs, when urgent assessment is advisable, and which specialties are usually involved. It is for general information and not a substitute for professional medical evaluation.
Bleeding in the digestive tract can come from the upper gastrointestinal tract (esophagus, stomach, duodenum) or the lower tract (small intestine, colon, rectum). Common causes include peptic ulcers, varices, inflammatory bowel conditions, diverticular disease and hemorrhoids, among others. These examples are for general orientation and do not replace clinical assessment.
Findings that may raise suspicion include bright red blood on or in the stool, maroon or dark stools, black tarry stools (melena), bloody or “coffee-ground” appearing vomit, and symptoms that can result from blood loss such as sudden weakness, light-headedness or palpitations. Presentation can vary in severity and combination.
Severe or rapidly worsening bleeding — for example vomiting large amounts of blood, passage of very dark or copious blood per rectum, fainting, confusion, shortness of breath, or signs of very low or very fast heart rate or low blood pressure — may need immediate emergency assessment. In those situations contact emergency services or go to the nearest emergency department rather than waiting at home.
Initial assessment may occur in primary care or the emergency department and includes checking vital signs, blood tests and a focused clinical exam. Gastroenterologists commonly perform endoscopic tests to locate and sometimes treat the bleeding source; surgeons or interventional radiologists may be involved depending on the cause and severity. Further imaging and specialist tests can be part of the evaluation. Individual care decisions require clinician assessment.
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