Nominal aphasia
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| Nominal aphasia Classification and external resources | |
| ICD-9 | 784.69 |
|---|---|
| MeSH | D000849 |
Nominal aphasia, a variety of anomic aphasia, is a form of aphasia (loss of language capability caused by brain damage) in which the subject has difficulty remembering or recognizing names which the subject should know well. The subject speaks fluently and grammatically, and has normal comprehension; the only deficit is trouble with "word finding," that is, finding appropriate words for what they mean to say.
Subjects often use circumlocutions (speaking in a roundabout way) in order to express a certain word for which they cannot remember the name. Sometimes the subject can recall the name when given clues. Sufferers are often frustrated when they know they know the name, but cannot produce it.
Sometimes subjects may know what to do with an object, but still not be able to give a name to the object. A subject is shown an orange, and asked what it is called. The subject may be well aware that the object can be peeled and eaten, and may be able to demonstrate this by actions or even verbal responses. Whether such a subject could name the color of the orange is unknown. Responses may differ depending on whether objects are shown in the right or left hand side of the visual field.
Anomia is caused by damage to various parts of the parietal lobe or the temporal lobe of the brain. This type of phenomenon can be quite complex, and usually involves a breakdown in one or more pathways between regions in the brain.
"Averbia" is a specific type of anomia in which the subject has trouble remembering only verbs. This is caused by damage to the frontal cortex, in or near Broca's area.
Another type of anomia is "color anomia", where the patient can distinguish between colors but cannot identify them by name. [1]
See also
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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
