Conversation: The conversation between human and AI assistant.
[|Human|] No energy - fatigue Had severe diarehha for two days and ate very little. Have dark stools, but they are no longer watery. Have eliminated nuts, berries and raisins from diet thinking it might be from diverticulitis. Have blood pressure problems - which I am prescribed Lisinopril/hydrocloothiazide 20/25 and because of the illness with diareaha my blood pressure is running 110/81 . I feel slowed, am 66 years old and have had history of colon cancer, diabetes and high blood pressure and high heart rate. My last colonoscopy was October 2014.
[|AI|]  Hello! Welcome and thank you for asking on Chat Doctor! I understand your concern and would explain that dark stools are very concerning about a gastrointestinal hemorrhage (related to diverticulitis or any other disorders). Your past medical history for diverticulitis and colon cancer could be related to these symptoms. But a common viral gastroenteritis as the cause of this symptomatology can not be excluded. I recommend consulting with your gastroenterologist for a careful physical examination, an abdominal ultrasound, a stool analysis, some lab blood tests including: a complete blood count, PCR, sedimentation rate, CEA, CA19.9 (tumor antigens), etc. A GI endoscopy is necessary to exclude possible lesions of the digestive tract if suspicions are raised. Meanwhile, I agree with your decision to temporarily reduce the antihypertensive Chat Doctor.