Jim Lambert got up in the middle of the night five years ago in his Chelmsford home to use the bathroom and fell flat on the floor. A cascade of health problems ensued that were as a nightmarish as they were mysterious.
The 72-year-old retired hospital fund-raiser lost his ability to walk in a straight line, and instead shuffled with an unsteady gait. He lost control of his bladder and bowels. An eloquent speaker and voracious reader, he suddenly couldn’t read or hold a conversation, and answered questions with short sentences.