Black stool with blood can indicate gastrointestinal bleeding, usually from the upper digestive tract, such as the stomach, esophagus, or small intestine. Common causes include peptic ulcers, gastritis (due to infection, NSAIDs, or alcohol), and esophageal varices, which are more common in
liver disease. The flu is not directly related, but infections or fever can sometimes worsen gastritis. If the bleeding continues or is accompanied by dizziness or weakness, urgent medical attention is needed. Avoid NSAIDs, alcohol, and spicy foods, and consider tests like a stool occult blood test or endoscopy to determine the cause. ð For consultation, connect with me on Practo for video consultations. For WhatsApp queries only: Eight Seven Six Two Seven Four Nine Nine Seven Four.