memory problems, insomnia symptoms, chronic pain, taste hallucinations, smell hallucinations, and
twitchy feelings and
paralysis in muscles are actually very characteristic of narcolepsy with cataplexy. In fact, often times, people don't have "Bells Palsy," but cataplexy. Viruses and some vaccines (namely the H1N1) can actually precipitate this, but it can happen seemingly in random fashion, too.
Common misdiagnoses are depression, epilepsy, and migraines.