If taste receptors seem out of place anywhere other than the mouth, this is only because they were first found in taste buds on the tongue, says neurobiologist Thomas Finger, co-director of the University of Colorado's Rocky Mountain Taste and Smell Center in Aurora.
Symptoms may include abdominal pain, vomiting, rectal pain and diarrhea. Left untreated chronic and ongoing blood in the stool can lead to severe blood loss over time (anemia). Symptoms of anemia can include weakness, dizziness, hypotension, fainting and shortness of breath. Blood in the stool may also occur without other noticeable symptoms.
In general, acute kidney failure is not associated with bloody stools. In fact, the symptoms of acute kidney failure are often difficult to detect. In general the symptoms of kidney injury include changes in your urine output or total volume, bloody urine, dark urine, foamy urine, or general tissue swelling. On the other hand, bloody stools are often a sign of other things going on. In a women your age, a blood stool is most likely do to a bleeding hemorrhoid.