Aphasia
Aphasia… is an impairment of language ability. This class of language disorder ranges from having difficulty remembering words to being completely unable to speak, read, or write. Aphasia disorders usually develop quickly as a result of head injury or stroke, but can develop slowly from a brain tumor, infection, or dementia, or can be a learning disability such as dysnomia.
Source: “Aphasia”. (2011, June 3). In Wikipedia, The Free Encyclopedia. Retrieved 01:47, June 24, 2011
From: http://en.wikipedia.org/w/index.php?title=Aphasia&oldid=432295741
