Alexia (disorder)

Jump to: navigation, search
Alexia (disorder)
ICD-10 R48.0
ICD-9 315.01, 784.61

WikiDoc Resources for Alexia (disorder)

Articles

Most recent articles on Alexia (disorder)

Most cited articles on Alexia (disorder)

Review articles on Alexia (disorder)

Articles on Alexia (disorder) in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Alexia (disorder)

Images of Alexia (disorder)

Photos of Alexia (disorder)

Podcasts & MP3s on Alexia (disorder)

Videos on Alexia (disorder)

Evidence Based Medicine

Cochrane Collaboration on Alexia (disorder)

Bandolier on Alexia (disorder)

TRIP on Alexia (disorder)

Clinical Trials

Ongoing Trials on Alexia (disorder) at Clinical Trials.gov

Trial results on Alexia (disorder)

Clinical Trials on Alexia (disorder) at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Alexia (disorder)

NICE Guidance on Alexia (disorder)

NHS PRODIGY Guidance

FDA on Alexia (disorder)

CDC on Alexia (disorder)

Books

Books on Alexia (disorder)

News

Alexia (disorder) in the news

Be alerted to news on Alexia (disorder)

News trends on Alexia (disorder)

Commentary

Blogs on Alexia (disorder)

Definitions

Definitions of Alexia (disorder)

Patient Resources / Community

Patient resources on Alexia (disorder)

Discussion groups on Alexia (disorder)

Patient Handouts on Alexia (disorder)

Directions to Hospitals Treating Alexia (disorder)

Risk calculators and risk factors for Alexia (disorder)

Healthcare Provider Resources

Symptoms of Alexia (disorder)

Causes & Risk Factors for Alexia (disorder)

Diagnostic studies for Alexia (disorder)

Treatment of Alexia (disorder)

Continuing Medical Education (CME)

CME Programs on Alexia (disorder)

International

Alexia (disorder) en Espanol

Alexia (disorder) en Francais

Business

Alexia (disorder) in the Marketplace

Patents on Alexia (disorder)

Experimental / Informatics

List of terms related to Alexia (disorder)

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and Keywords: Word blindness; text blindness; visual aphasia.

Overview

Alexia (from the Greek , privative, expressing negation, and λέξις = "word") is an acquired type of sensory aphasia where damage to the brain causes a patient to lose the ability to read.

Differential Diagnosis of Causes of Alexia

Alexia typically occurs following damage to the left hemisphere of the brain or to the areas of the occipital and temporal lobes, which are responsible for processing auditory, phonological and visual aspects of language. The region at the junction of occipital and temporal lobes (sometimes called the occipito-temporal junction) coordinates information that is gathered from visual and auditory processing and assigns meaning to the stimulus. Alexia can also occur following damage to the inferior frontal lobe, especially Broca's area. Damage to these different areas cortex result in somewhat different patterns of difficulty in affected individuals.

Diagnosis

Signs and Symptoms

Alexia may be accompanied by expressive and/or receptive aphasia (the inability to produce or comprehend spoken language). Alexia can also co-occur with agraphia, the specific loss of the ability to produce written language even when other manual motor abilities are intact. In other cases, damage is restricted to areas responsible for input processing. The result is known as alexia without agraphia. In this scenario, an individual's ability to produce written language is spared even though they are unable to understand written text.

Alexia without agraphia results from a left occipital splenium of the corpus callosum lesion.

See also



Linked-in.jpg