What Is Aphasia? | Texas Tech University Health Sciences Center

A brain injury, such as a stroke, can damage the left side of the brain.  This damage can cause aphasia.
People with aphasia are intelligent and know what they want to say.
If you have aphasia, it may be hard to:

  • Talk

  • Understand Speech

    Understanding speech
  • Read

    A man reading a book
  • Write

    A hand writing on paper

People with aphasia often have other communication problems, such as:


  • Weak speech muscles make speech sound slushy.

Apraxia of Speech (AOS)

  • Problems making the movements of speech, such as:

    • Problems starting the movement.
    • Problems planning the movement.
    • Problems getting the movements in the right order.

Aphasia Definitions by the Experts

The National Aphasia Association States:

  • Aphasia is an acquired communication disorder that impairs a person’s ability to process language, but does not affect intelligence.
  • Visit www.aphasia.org to find out more about the National Aphasia Association!

The Harvard Health Publication reads:

  • Aphasia involves difficulty speaking or comprehending language; a common occurrence after a stroke affecting the left hemisphere of the brain, where language is processed.