Aphasia

Aphasia is a language disorder caused by brain damage that affects your ability to read, write, speak, and understand others.

What is aphasia?

Aphasia is a language disorder that makes it hard for you to read, write, and say what you mean to say. Sometimes it makes it hard to understand what other people are saying, too. Aphasia is not a disease; it is a symptom of damage to the parts of the brain that control language.

The signs of aphasia depend on which part of the brain is damaged. There are four main types of aphasia:

• Expressive aphasia: You know what you want to say, but you have trouble saying or writing your thoughts.
• Receptive aphasia: Affects your ability to read and understand speech. You can hear what people say or see words on a page, but you have trouble making sense of what they mean.
• Global aphasia: The loss of almost all language ability. You cannot speak, understand speech, read, or write.
• Anomic or amnesia aphasia: You have trouble using the right words for certain things, people, places, or events.

In some cases, aphasia may get better on its own, but it can be a long-term condition. There is no cure, but treatment may help improve language skills.

What causes aphasia?

Aphasia happens from damage to one or more parts of the brain involved with language. The damage may be from:

• Stroke (the most common cause)
• Brain tumor
• Brain infection or inflammation
• Brain injury
• Other brain disorders or neurologic diseases that affect the brain and get worse over time, such as dementia

Who is more likely to develop aphasia?

Anyone can have aphasia at any age, but most people with aphasia are middle-aged or older. Most aphasia happens suddenly from a stroke or brain injury. Aphasia from a brain tumor or other brain disorder may develop slowly over time.

How is aphasia diagnosed?

If a health care provider sees signs of aphasia, they will usually:

• Test the person's ability to understand language and speech, including asking questions and checking to see if the person can follow simple commands.
• Order an imaging scan to see if there is a brain injury and what part of the brain is damaged. Possible tests include:
  • MRI
  • CT scan

If imaging shows signs of aphasia, more tests may be needed to measure how much the brain damage has affected the ability to talk, read, write, and understand. In most cases, these tests are done by a speech-language pathologist or speech therapist.

What are the treatments for aphasia?

Some people fully recover from aphasia without treatment, but most people should begin speech-language therapy as soon as possible. Treatment may be one-on-one with a speech therapist, in a group, or involve computer-based therapy.

The specific therapy depends on the type of language loss. It may include exercises in reading, writing, following directions, and repeating what the therapist says. Therapy may also include learning how to communicate with gestures, pictures, smartphones, or other electronic devices.

Family participation is often an important part of recovery. Family members can help by:

• Using simpler language
• Including the person with aphasia in conversations
• Repeating or writing down key words to help communicate more clearly

Language abilities may continue to improve over many years. In general, people recover their ability to understand language more fully than their ability to speak. Recovery depends on the cause of the injury, the location and severity of the damage, and the age and health of the person.

Can aphasia be prevented?

You can help prevent aphasia by:

• Making heart-healthy lifestyle changes to lower your chance of having a stroke, heart disease, or vascular disease.
• Protecting your brain from injury:
  • Wearing the right helmet for sports safety, such as when riding a bike.
  • Taking action to prevent falls.
  • Always wearing your seatbelt and driving safely.