Q. What conditions can lead to melena?
Doctor Answer is medically reviewed by SecondMedic medical review team.
Melena is a medical term used to describe the passage of dark, tarry, and foul-smelling stools that contain blood. It is typically a sign of bleeding in the upper gastrointestinal tract, specifically in the esophagus, stomach, or duodenum. There are several conditions and factors that can lead to melena, including:
1. Peptic Ulcers: Peptic ulcers are sores that develop on the lining of the stomach or the duodenum. When these ulcers bleed, it can result in melena.
2. Gastrointestinal Bleeding: Various gastrointestinal conditions, such as gastritis, esophagitis, or diverticulosis, can cause bleeding in the upper digestive tract, leading to melena.
3. Esophageal Varices: These are swollen blood vessels in the esophagus, often associated with liver disease (cirrhosis). When they rupture, it can cause severe bleeding and melena.
4. Mallory-Weiss Tears: These are small tears or lacerations in the lining of the esophagus, often caused by severe vomiting or retching. They can lead to melena when they bleed.
5. Gastric Cancer: Stomach cancer can result in bleeding and melena when tumors erode blood vessels in the stomach lining.
6. Medications: Certain medications, such as non-steroidal anti-inflammatory drugs (NSAIDs), aspirin, and anticoagulants, can irritate the gastrointestinal tract and lead to bleeding.
7. Alcohol Abuse: Excessive alcohol consumption can damage the gastrointestinal lining and contribute to bleeding.
8. Esophagitis: Inflammation of the esophagus, often due to conditions like gastroesophageal reflux disease (GERD), can cause bleeding and melena.
9. Crohn's Disease: This inflammatory bowel disease can lead to ulcerations in the digestive tract, which may result in bleeding and melena.
10. Hemorrhoids: While melena typically indicates upper gastrointestinal bleeding, in some cases, bleeding from hemorrhoids, which are swollen blood vessels around the anus, can mix with stool and give the appearance of melena. However, true melena primarily originates from upper GI sources.
It's important to note that melena is a serious medical symptom that should be evaluated by a healthcare professional. Prompt diagnosis and treatment are essential to identify the underlying cause of the bleeding and address it appropriately.
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