What is PRESENILE DEMENTIA OF THE ALZHEIMER'S TYPE (PDAT)?

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

An outdated label for Alzheimer's type dementia before the patient's 65th birthday.

PRESENILE DEMENTIA OF THE ALZHEIMER'S TYPE (PDAT): "Shawn began showing symptoms of Alzheimer's dementia before he turned 65 and was diagnosed with Presenile Dementia of the Alzheimer's type."

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