My husband it seems got up too quickly from the sofa, walked across the room, got very dizzy and fell. I don t believe he fainted, but was very confused for a few minutes. He was able to get up and sit in a chair, still very dazed. He broke out in a cold sweat. Gave him some ice water which he asked for , then he felt better and stopped sweating. Of course his back is sore from the fall. He has gotten dizzy before - laying down to a standing position.