I have dealt with migraine headaches since I was 14 years old. Recently I have had some other symptoms that have scared me. I have always experiences auras with the migraines, but I have have two episodes that have been different. I have had a sudden pain in my head accompanied by double and very disturbed vision. This disturbance lasts for about 60 seconds and then was followed by nausea and weakness. I had a headache for the remainder of the day, but no further visual problems. Is this just another migraine symptom or should I be concerned about stroke?