Sounds like Alzheimer's disease, unfortunately. Take em to a doc to get him evaluated asap. The disease is caused by a protein called "beta amyloid." It forms senile plaques which basically are tangled or twisted proteins called polysomething... Anyways, it's been said that if we grow old enough, eventually all people will get the disease, i.e. intrinsic. Finally, something useful I learned @ skool.
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