Tracking the source of a train hobbyist’s memory loss
A patient passes the time making fishing sinkers and model steam engines, but his hobbies ultimately expose the cause of his mysterious memory loss

Andy, a 52-year-old laboratory manager, presents with a six-month history of worsening memory and short-term recall problems. He also reports dizziness and occasional left leg weakness.
At his worst, he has needed frequent reminders from his wife, Jen, to complete day-to-day tasks, and his work has been so significantly impacted that he has had to take time off.