Certain types of dementia (e.g., Alzheimer's, Lewy body, Parkinson's and frontotemporal dementia) may affect language ability. People who have these conditions may forget the names of people and things. They could use words that mean something entirely unrelated. Sometimes, they speak in "word salad," using a combination of words and sounds that seem to make no sense. Over time, many might stop speaking entirely.

This can be frustrating for the person with dementia and their family caregivers.

Watch this video to learn more about what challenging dementia behaviours are, what causes them and ways to improve communication.