Primary Progressive Aphasia (PPA)
Primary Progressive Aphasia (PPA) is characterized predominantly by the gradual loss of the ability to speak, read, write, and understand what others are saying.
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PPA is diagnosed when three criteria are met:
- There is a gradual impairment of language (not just speech).
- The language problem is initially the only impairment.
- The underlying cause is a neurodegenerative disease.
Experts further subdivide PPA into three clinical subtypes based on the specific language skills that are most affected.
Click below to learn about the PPA subtypes: