One or more language functions can be damaged.Aphasia is caused by damage to the brain.
As a result of this injury, the pathways for language comprehension or production are disrupted or destroyed.
For most people, this means damage to the left hemisphere of the brain.
In approx. 95% of right-handed people, language centers are in the left hemisphere, and up to 70% of left-handed people also have left-hemisphere language dominance.