The medication also effects the taste of things for me, especially
carbonated drinks. I am addicted to Coca-Cola
and it made it taste sort of like metal. It's pretty awful. I also get EXTREMELY thirsty on it. On the plus side, I started drinking less soda-pop and started drinking more water!
My migraines are what led to my diagnosis. They found my lesions during a routine MRI, and confirmed it with my Lumbar Puncture.
Try not to panic, although your fear is completely understandable.