Language disorders

Aphasia, also known as dysphasia, is an impairment in a person's ability to comprehend or formulate language because of dysfunction in specific brain regions. The major causes are stroke and head trauma; prevalence is hard to determine, but aphasia due to stroke is estimated to be 0.1–0.4% in developed countries. Aphasia can also be the result of brain tumors, epilepsy, autoimmune neurological diseases like multiple sclerosis, infection of the brain, or neurodegenerative diseases like dementias.

range of neurodevelopmental conditions

Agrammatism is a characteristic of non-fluent aphasia. Individuals with agrammatism present with speech that is characterized by containing mainly content words, with a lack of function words. For example, when asked to describe a picture of children playing in the park, the affected individual responds with, "trees..children..run." People with agrammatism may have telegraphic speech, a unique speech pattern with simplified formation of sentences (in which many or all function words are omitted), akin to that found in telegraph messages. Deficits in agrammaticism are often language-specific, h

type of aphasia

range of neurodevelopmental conditions

Palilalia, a complex tic, is a language disorder characterized by the involuntary repetition of syllables, words, or phrases. It has features resembling other complex tics such as echolalia or coprolalia, but, unlike other aphasias, palilalia is based upon contextually correct speech.

neurodevelopmental condition

branch of linguistics

language disorder in which a child fails to develop language normally

language abilities below the expected level for a given age

neurodevelopmental condition

thumb|upright=1.3|Psittacism refers to repetitive parrot-like speech Psittacism is speech or writing that appears mechanical or repetitive in the manner of a parrot. More generally it is a pejorative description of the use of words which appear to have been used without regard to their meaning.

speech sound disorder

fonoaudiologia

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medical condition

language in the mind during sleep