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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 ]
The most common cause of expressive aphasia is stroke. A stroke is caused by hypoperfusion (lack of oxygen) to an area of the brain, which is commonly caused by thrombosis or embolism. Some form of aphasia occurs in 34 to 38% of stroke patients. [23] Expressive aphasia occurs in approximately 12% of new cases of aphasia caused by stroke. [24]
Neurological damage due to stroke may cause loss or impairment of speech, termed aphasia. Neurological damage or problems with development of the area of the brain involved in speech production, Broca's area, may cause muteness. [8] Trauma or injury to Broca's area, located in the left inferior frontal cortex of the brain, can cause muteness. [9]
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Stroke is the 5th-leading cause of death in the U.S. and a leading cause of severe disability. ... Patrick struggles to speak because of a condition called aphasia. It can occur suddenly after a ...
Regions of the left hemisphere that can give rise to aphasia when damaged. In neuropathy, primary progressive aphasia (PPA) [1] is a type of neurological syndrome in which language capabilities slowly and progressively become impaired. As with other types of aphasia, the symptoms that accompany PPA depend on what parts of the brain 's left ...
Aphasiology. Aphasiology is the study of language impairment usually resulting from brain damage, due to neurovascular accident—hemorrhage, stroke—or associated with a variety of neurodegenerative diseases, including different types of dementia. These specific language deficits, termed aphasias, may be defined as impairments of language ...
Cerebral atrophy is a common feature of many of the diseases that affect the brain. [ 1 ] Atrophy of any tissue means a decrement in the size of the cell, which can be due to progressive loss of cytoplasmic proteins. In brain tissue, atrophy describes a loss of neurons and the connections between them. Brain atrophy can be classified into two ...