Exanthem subitem See roseola

expressive language disorders Impairments in the ability to express ideas through language characterized by problems with vocabulary, grammatical structures, word order, and overall language development. Expressive language disorders may have a severe impact on an individual's ability to generate spoken language and may be associated with other language-based learning disorders, such as reading disability or written expression disorder. Three to 10 percent of all school-age children have an expressive language disorder.

There are a number of disorders relating to expressive language. Dysnomia refers to the inability to remember and express specific words. Individuals with dysnomia may "talk around" a word in order to express an idea without finding the appropriate words. For example, someone with dysnomia might say, "that thing you eat that is yellow and long" when attempting to say "banana."

Expressive language disorders also include those patients who can remember the word they want to say but cannot physically manipulate their speech muscles to produce the word. This disorder is called apraxia. Disorders in oral expressive language are called expressive aphasia. Students would be considered aphasic if they have problems expressing themselves orally but have no difficulty understanding language spoken to them and are successful with nonverbal tasks.

Cause

Although the cause of these disorders is unknown, brain damage and malnutrition have been associated as underlying factors. The condition can be present at birth or acquired at a later time, if brain damage or a medical condition affects otherwise normal development.

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