Conversation: The conversation between human and AI assistant.
[|Human|] im 37 years old I am 5 11 tall & weight 225lbs I have hep c iam not being treated for it & last time I checked my levels were normal & always have been I was put on doxycycline & have been on it for nearly 10days but now for the past 24hrs I have been having extremely bloody stool what could be the cause is it the doxycycline
[|AI|]  Hi, I have gone through your query. If your stools are black & tarry, you must undergo Upper GI Endoscopy to rule out esophageal varices as you are suffering from Hepatitis C. There can be other causes of blood in stools as well as peptic ulcer disease, esophagitis, etc. If blood in stools is bright red, you must consult your local doctor to look for other causes like hemorrhoids. Hope my answer will help you.