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In aphasia (sometimes called dysphasia), [a] a person may be unable to comprehend or unable to formulate language because of damage to specific brain regions. [2] 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 the Global North. [3]
Selective mutism (SM) is an anxiety disorder in which a person who is otherwise capable of speech becomes unable to speak when exposed to specific situations, specific places, or to specific people, one or multiple of which serve as triggers. This is caused by the freeze response. Selective mutism usually co-exists with social anxiety disorder. [1]
The alternative meaning of alogia is inability to speak because of dysfunction in the central nervous system, [10] [3] found in mental deficiency and dementia. [11] [3] In this sense, the word is synonymous with aphasia, [3] and in less severe form, it is sometimes called dyslogia. [10]
In human development, muteness or mutism [1] is defined as an absence of speech, with or without an ability to hear the speech of others. [2] Mutism is typically understood as a person's inability to speak, and commonly observed by their family members, caregivers, teachers, doctors or speech and language pathologists.
Inability to differentiate, recognize, or understand sounds; hearing and intelligence are normal. Chemosensory disorders Diseases or problems associated with the sense of smell or the sense of taste. Cholesteatoma Accumulation of dead cells in the middle ear, caused by repeated middle ear infections. Cochlea
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Less common causes of expressive aphasia include primary autoimmune phenomenon and autoimmune phenomenon that are secondary to cancer (as a paraneoplastic syndrome) have been listed as the primary hypothesis for several cases of aphasia, especially when presenting with other psychiatric disturbances and focal neurological deficits. Many case ...
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