Which aphasia is fluent but nonsensical, with impaired comprehension and reading, and mild repetition issues, due to left posterior temporal/parietal damage?

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The pattern described—speech that is fluent but nonsensical, with impaired comprehension and reading, and only mild repetition difficulty—points to a receptive language disorder centered in the left posterior temporal/parietal region. This profile is characteristic of Wernicke's aphasia. In this form, speech flows with normal rate and intonation, but the content often lacks meaningful semantics, and understanding spoken language is significantly impaired, which also affects reading. Repetition is affected because accurately echoing speech relies on intact comprehension and phonological processing, but the core issue is the impaired language comprehension that distorts both speech meaning and reading.

This differs from Broca's aphasia, where speech is nonfluent and effortful but comprehension is relatively preserved; from conduction aphasia, where speech is fluent and comprehension is relatively intact but repetition is severely impaired; and from global aphasia, where both expressive and receptive abilities are profoundly disrupted.