Problems with reasoning or language. Trouble coming up with the right word, say, or problems orienting oneself geographically to get from point A to point B can be classic signs of issues with reasoning, Knopman says. As the disease process of dementia affects other areas of the cerebral cortex, including causing a loss of volume and atrophy, a person's ability to make reasoned decisions, to select the appropriate descriptive word, or to use landmarks and recruit skills to make use of directions will diminish.
Forgetting what an item or object is for. If a person looks at his checkbook and all of a sudden doesn't recall what it is or why it is used, that's a hint of cognitive trouble. "To not understand the meaning of an object," says Knopman, "we see that in some early types of dementia.
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