This condition can make it hard to understand words, find the right words to express your thoughts, understand written sentences, and reading or writing words or sentences. This is the impairment of your ability to either use or understand words. The most common are:Īt times, it can be hard to determine which of these the stroke survivor has it is possible for all three to be present at once. There are several communication disorders than can occur after you have a stroke or other type of brain injury.