#language disorder

• Aphasia — A severe communication disorder consisting of the total or partial loss of the ability to speak, write, and understand articulate or written language, occurring in the absence of sensory deficits or vocal apparatus impairment. It is triggered by acquired organic lesions in the cerebral cortex, primarily affecting the language-dominant hemisphere.
• Alexia — An extremely rare specialized medical term used to describe the pathological inability or severe difficulty to read or understand written text, often conceptually correlated with alexia or agraphia; by extension, in some old psychopathology papers, the term indicates a focal neurological disorder resulting from a brain lesion in the left parietal or occipital lobe, affecting the symbolic processing of graphic signs without altering visual acuity.
• Allolalia — A speech disorder or language dysfunction characterized by the defective, inverted, or modified pronunciation of words, or by the alteration of the phrases' logical structure, without the patient presenting organic lesions of the vocal apparatus or severe intellectual deficiencies. This functional structural phenomenon often manifests within early neurological syndromes and is addressed through intensive speech therapy.
• Asyntactic — Not syntactic, lacking syntactic structure; violating, ignoring, or not conforming to the rules of word organization and combination within clauses or sentences. In linguistics, it describes utterances formed by the simple chaotic juxtaposition of words; in medicine and neurology, it applies to the fragmented speech specific to Broca's aphasia patients, characterized by the loss of structural capacity to construct grammatically correct sentences.
• Autoecholalia — A speech disorder manifested by the automatic, involuntary, and stereotyped repetition of one's own words or syllables immediately after pronouncing them; a clinical phenomenon often observed in autism spectrum disorders, schizophrenia, senile dementia, or various cortical neurological conditions.