What are some Gastroenterology symptoms that I should never ignore? Dr. Sidney Smith: I think certainly there are obviously what we call Red Flag Symptoms. I think Gastrointestinal bleeding of any sore having blood in your volume, it’s having black bowel movements, severe abdominal pain, acute change in your bowel habits, having going from you know been normal bowel movement everyday to all of the sudden be in constipated or you know the reverse going to having severe diarrhea. Certainly difficulty of swallowing, painless swallowing the cessation of food not going down, all of those I think are symptoms that should prompt me to see medical attention soon or rather than later.