question: Hi my sister had Hep C and was treated with Harvoni about 1 yr ago. Now the Hep C is gone, but she continues to internal bleeding. Three or four bouts of this since August. Doctors can not find where the blood is coming. They have cauterized a couple of small Variocese but this keeps happening. The most recent on Friday, they could not find any reason for the blood. Did Endoscopy and CT scan and no leaks. But she throws up pure blood. What could be causing this???