I am a 42 year old female with a long history of migraine headaches. Actually, I have had them since I was 10 or so. In 2/04 I had a migraine that lasted 5 days so went to the neurologist and had an MRI done. The MRI findings were: Multiple small lesions are seen in the central and subcortical white matter of the cerebral hemispheres with high T2 signal. These are not ovoid in shape or transversely oriented. In light of the migraine headaches, these probably represent sequelae of vascular headaches. Diffusion weighted images show no evidence of a recent infarct. Facial structures appear normal. The visualized portions of the distal internal carotid and vertebral areteries, basilar artery, circle of Willis and the proximal anterior, middle and posterior cerebral arteries all appear normal. In November of 2005 I awoke to severe vertigo. It actually woke me up from sleeping. It was very severe as I could not move my head in any direction without the room spinning. Into the third day of this, I also experienced severe weakness and almost fainted. I have never had this before. I have had vertigo before, but much milder. I did some postural exercises for the vertigo and took benedryl too. It finally went away about a week or so later, but the weakness lasted for a good month. I am now better, but still occasionally feel weak and tired. Do you feel that this was a virus or something like that, or do you think that MS is a possibility. Also, I can only take Advil for the migraine headaches as I am allergic to acetaminophen. How often a week is it safe? Thanks