People with dementia often experience a gradual decrease in their ability to communicate as their dementia progresses. They may find it more and more difficult to express themselves clearly to others and to understand what others are saying to them. This can become frustrating for people with dementia, and for those trying to communicate with them. The different types of dementia affect the brain in different ways and each individual communicates their thoughts and feelings in a unique fashion. However, there are often similarities in their losses.