Well, most animals have worms sooner or later.Cappy thinks *everything* is worms, lol!
Could be viral...any sudden, neurologic-looking things always gets me thinking of Marek's or other viral diseases. I'm sorry Nunny, that would definitely freak me out! You're in the new place, right? Maybe do a soil check with your local extension? See if there's any toxins--lead, eetc.