Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Aphasia ?
    ### Response:
    Aphasia is a disorder caused by damage to the parts of the brain that control language. It can make it hard for you to read, write, and say what you mean to say. It is most common in adults who have had a stroke. Brain tumors, infections, injuries, and dementia can also cause it.
    