Last Sunday I woke up in the morning with a very sore elbow. When I looked at it in the mirror, it was a red, circle about the size of a dollar. It was quite sore. As the day progressed it began to spread, red and bruising, up toward my armpit. I went to the er room and they exrayed it and wrapped it with an ace bandage. I have no idea what it is. It is spreading and very sore. I do take xeralto, and was told I may want to stop that. what do you suppose it is?