Dementia can affect the way people think and behave. People with dementia also have a harder time in performing the usual, everyday tasks that they used to do flawlessly. The function of the brain becomes affected, and this will also affect the way that the person can interact with different people.
They will find it harder to communicate with the people that they love. There are even instances when they do not even remember some of the things that have just occurred. They may not have the ability to think cognitively anymore about the things that they are supposed to do throughout the day. Most people who have this would need to be cared for.