Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Logopenic progressive aphasia ?
    ### Response:
    Logopenic progressive aphasia (LPA) is a type of dementia characterized by language disturbance, including difficulty making or understanding speech (aphasia). It is a type of primary progressive aphasia (PPA). Affected individuals have slow, hesitant speech due to difficulty retrieving the correct words, names, or numbers.
    