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Is it possible for a 14-year-old to have dementia?

According to the Childhood Dementia Initiative, approximately one in every 2,900 babies globally is born with a condition that causes childhood dementia. While typically associated with older adults, it is possible for a 14-year-old to have dementia, though it is the result of rare and progressive genetic neurodegenerative disorders rather than common forms like Alzheimer's.