Aphasia is a communication impairment that usually occurs as a result of stroke. According to the National Aphasia Association, it affects both the ability to express oneself through speech, gesture, and writing, and to understand the speech, gestures, and writing of others.
Although the condition can result from head injury, brain tumors or other neurological causes, stroke is the most common cause of aphasia.
And the most common cause for stroke is ...
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