I don't know what to think. That is pretty weird, how it comes and goes so quickly. I definitely feel my weakness coming and going, but my "spells" of weakness last much longer--usually about 45 minutes. My weakness never goes away suddenly, but gradually fades out.

What you're experiencing is unusual, which may be a good thing--it may be a very useful clue to your neurologist. Please let us know how the visit goes.

Abby