atrial fibrillation
"While on Xarelto I experienced a stroke.  Partial loss of vision.  I have atrial fibrillation. Initially, a few years ago I was put on Coumadin.  That was a hassle. Then I was very glad when Pradaxa came out and it was prescribed.  But it caused such stomach pain.  I was then put on Xarelto. I took it faithfully as prescribed.  I had no discomfort or side effects, but then in December of 2016 I had the stroke.  Now I am on Eliquis."