Patients with dementia may begin to develop problems with repetition that can range in severity. An individual may forget if they went to the grocery store or washed their car and, as a result, repeat these tasks. This may eventually progress into completing tasks over and over again. They may even begin untying their shoes and then retying them several times within the same hour. This early warning sign can often be confusing, causing friends and family members to associate it with obsessive-compulsive disorder.

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