What Causes Sudden Blurred Vision That Lasted For A Few Minutes Apart From Hot Flushes, Slight Nervousness And Dryness In The Mouth?

I was driving and all of a sudden i felt like i had double vision. I pulled over and it lasted 5 or so minutes and went away. I am home and feel ok just my face is a little flushed and I feel a little nervous. I took two advil. My mouth is a little dry.