A stroke can cause problems with communication if there is damage to the parts of the brain responsible for speech. It can also cause communication problems if muscles in the face, throat or tongue are affected.
A stroke can also affect how well the person can understand speech, can read or write. The range of communication problems stroke patients may have depend on where in the brain stroke happened and how large an area was damaged. There are three main conditions that affect communication skills after stroke – aphasia, dysarthria and dyspraxia. A stroke patient may experience one or combination of these.
The most common speech disorder due to stroke is aphasia. It affects the person’s ability to speak, to understand what’s said, as well as reading and writing skills. It can affect only one aspect of communication or several of them at the same time. While influencing communication, it doesn’t impact intelligence, although sometimes people think it does.