Aphasia is a communication problem. Aphasia can result from a stroke or injury affecting the language areas of the brain. Aphasia is a problem with language. It is not a problem of thinking or intellect. It is not the same as dementia. It is important to understand that people with aphasia know more than they can say.
Aphasia affects everyone differently. There are several different types of aphasia. Aphasia can vary in severity, from very mild to very severe. One person may be able to speak with just a bit of hesitation, while another may be unable to say anything at all. One person may be able to read and to write short sentences, while another may be unable to write his name.