What is a common hallmark feature of primary progressive aphasia?

Primary progressive aphasia (PPA) is characterized by a gradual decline in language abilities while other cognitive functions may initially remain relatively intact. A hallmark feature of PPA is indeed difficulty understanding and following conversations. Individuals with PPA often struggle with language comprehension and have trouble processing spoken or written language, which significantly impacts their ability to engage in conversations. This language impairment is progressive, meaning it worsens over time, leading to increased challenges in communication.

In contrast, high fluency in speech is generally not a feature of PPA as the condition affects linguistic abilities. Enhanced cognitive functions might not be present since cognition can be affected by underlying neurodegenerative processes. Additionally, problems in spelling become more pronounced as the disorder progresses, making the absence of spelling issues an incorrect characteristic of PPA. Thus, the noted difficulties in understanding and following conversations accurately represent a core aspect of primary progressive aphasia.