What causes asphalt?

Tar refers to stool is black, sticky, with similar tar-like luster, usually and upper gastrointestinal bleeding, including drug side effects, chronic gastritis and esophageal varices, etc.

1, drug side effects

Some drugs, such as aspirin, ibuprofen, etc., can directly damage the gastric mucosa, leading to mucosal erosion and bleeding, blood through the intestinal action can lead to tar stool.

2, chronic gastritis

Chronic gastritis is usually related to poor eating habits, Helicobacter pylori infection, etc., can lead to gastric mucosa damage, with mucosal bleeding, can also cause tar stool.

3, esophageal varices The

disease is usually related to increased portal vein pressure, with local venous pressure, when the pressure is greater, rupture, and then lead to bleeding, blood through the gastrointestinal action and stool mixed, can lead to tar stool.