Mixed Language Disorder is about an alteration in which receptive and expressive language are significantly below the intellectual level assessed by standardized tests of nonverbal intellectual capacity.
The subjects who suffer from it present the symptoms of Expressive Language Disorder plus those of receptive language, such as difficulty understanding particular types of words (eg spatial terms) or certain grammatical forms (negative, comparative, interrogative), or lack of understanding of subtle aspects of language. As in the Expressive Language Disorder, there are two types based on the way they occur, Evolutionary and Acquired, depending on whether it is a stop of the evolutionary process of the subject in this area, or the loss of skills achieved in an evolutionary stage correct. The evolutionary type never occurs showing only changes in receptive language.
There are frequent deficits in different areas of sensory information processing, especially in temporary auditory processing. Conversation skills are often lacking and inadequate. The difficulty to produce motor sequences is characteristic. There is usually Phonological Disorder, and learning disorders. Sometimes it presents with Attention Deficit Hyperactivity Disorder, Coordination Development Disorder and Bedwetting. It can be accompanied by alterations of the E.E.G. and other neurological alterations. There is an acquired type form that begins between 3 and 9 years, with seizures, known as Landau-Kleffner syndrome.
Prevalence of mixed receptive-expressive language disorder
It is estimated in 3% of school-age children how often this disorder occurs.
Start and Course
It is detected before 4 years (evolutionary type). Severe forms can be detected by two years. Many come to have normal language but the prognosis is worse than in Expressive Language Disorder.
Family pattern of mixed receptive-expressive language disorder
The evolutionary type is more frequent among first-degree biological relatives.
Differential diagnosis is performed just as in the case of Expressive Language Disorder.
All Psychological Therapies