For the last two months I have experienced sudden weakness in my right arm followed by dizziness and nausea and I usually have a headache. The frequency has increased in the last two weeks and so has the duration. It happens at least once a day, usually in the afternoon or evening. Now, today, during one of these episodes, I felt faint when I stood up. It started two hours ago. I took something for the nausea but I am still experiencing a weakness in the right arm and headache. I have been diagnosed with acute narrow angle glaucoma and am scheduled for surgery in eight days. My eye surgeon does not feel it is related to the glaucoma. What should I do? What is wrong?