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Receptive Aphasia

(Alexia; Alexic Anomia; Word Blindness; Text Blindness; Visual Aphasia)

Definition

Alexic anomia happens when you lose your ability to understand written words. You can no longer read and name words. This is a type of receptive aphasia, which is a language disorder that involves difficulty understanding spoken or written language. It is caused by the brain not functioning correctly. This is a serious condition that may change over time, depending on the cause.
Stroke—Most Common Cause of Alexic Anomia
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Causes

Alexic anomia is caused by damage to the language areas of the brain, for example:

Risk Factors

Alexic anomia is more common in older people. Other factors that may increase your chance of alexic anomia include:

Symptoms

Symptoms include:

Diagnosis

Your doctor will ask about your symptoms and medical history. A physical exam will be done. A neurological examination and tests may also be done to check brain function.
Imaging tests are used to evaluate the brain and other structures. These may include:
You may be referred to a neurologist. This is a doctor who specializes in diseases of the nervous system.

Treatment

Talk with your doctor about the best plan for you. Treatment options include the following:

Prevention

Since stroke is a common cause of aphasia, follow these guidelines to help prevent stroke:
If you have signs of a stroke, call for emergency medical services right away.

RESOURCES

National Aphasia Association http://www.aphasia.org

National Institute of Neurological Disorders and Stroke http://www.ninds.nih.gov

CANADIAN RESOURCES

The Aphasia Institute http://www.aphasia.ca

Brain Injury Association of Alberta http://www.biaa.ca

References

Aphasia. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated September 2, 2012. Accessed May 16, 2013.

Aphasia information page. National Institute of Neurological Disorders and Stroke website. Available at: http://www.ninds.nih.gov/disorders/aphasia/aphasia.htm. Updated July 9, 2012. Accessed May 16, 2013.

Cherny LR. Aphasia, alexia, and oral reading. Top Stroke Rehabil. 2004;11:22-36.

Freedman L, Selchen DH, et al. Posterior cortical dementia with alexia: neurobehavioural, MRI, and PET findings. J Neurol Neurosurg Psychiatry. 1991;54;443-448.

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