"Aphasia/dysphasia refers to the specific impairment of language functions - the ability to form and understand words whether communicated orally or in writing."

"About a third of people with a stroke are likely to be aphasic. Aphasia can have a significant impact on all aspects of an individual's life, as well as that of their carers, often affecting mood, self-image, well-being, relationships, employment and recreational opportunities."

(ISWP , 2012 p97)