fluorescents as a trigger

Hi I have an unusual problem since my problem is worse at the initial trigger of my migraine than during the sinus pain/fatigue I get after. If I am under fluoresent lights for a long period of time I get spacy, disconnected if I'm talking to someone (this is a very disturbing feeling) then when I get out of the lights I have some anxiety symptoms of slight shortness of breath and irritability, and then I get sinus pain in my face and lots of fatigue. My symptoms of the spaciness is worse than the pain in my sinuses and I wonder if this happens to anyone else. If I put my face in the sun I don't get the spaciness but almost immediately my sinuses get really dried up, then run alot, sneeze alot, and eyes sometimes water. this goes away after some time inside. So these are my weird symptoms that a neurologist this week said was migraines. He gave me topamax to take but I'm afraid it will make my symptoms worse. I think my spaciness/disconnectedness is due to seratonin constricting my blood vessels and then the other symptoms happen when the blood vessels then overdilate. If I take the topamax, fromwhat I've read, it dilates blood vessels and I think that will make my particular problemworse. Anyone have anything similar or any ideas! Thanks so much in advance. Linda from RI