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In page Auguste Deter:

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During the late 1890s, Deter exhibited a rapid escalation in memory loss[citation needed] and started showing symptoms of dementia, such as loss of memory, delusions, and even temporary vegetative states.[1] In March 1901, Auguste's behavior started to become out of control. She began to accuse Carl of being adulterous and soon became jealous. Auguste started to become inattentive with housework, purposely hid objects and lost her capacity to cook. She also developed insomnia, which caused her to drag sheets outside the house and scream for hours in the middle of the night. She became paranoid over neighbors and strangers as she believed someone was out to kill her.