Gastrointestinal bleeding (GIB) is blood loss from your gastrointestinal tract from any site from your mouth to your rectum. The level of bleeding can range from mild to severe and life threatening. Small amounts of bleeding over a long period of time can cause iron deficiency anemia with symptoms of fatigue, dizziness, and weakness. GIB is divided into two different types: upper GIB and lower GIB.
Here is what you should know about upper and lower GIB:
Diarrhea can quickly deplete the body's supply of water and electrolytes (such as sodium and potassium) that tissues need to function.