On Nov. 25, 1901, a 51-year-old woman is admitted to a hospital in Frankfurt, Germany, displaying a bizarre constellation of symptoms. Her behavior is erratic. She shows signs of paranoia as well as auditory hallucinations, disorientation, and severe memory impairment. Asked to write her own name, she manages "Mrs.," then lingers over the page, unable to remember the rest. "I have lost myself," she tells the attending physician.