Dementia what is it? please explain ?

Its a neurological disease which affects someone memory and behaviour. It changes someones personality so they can't recall facts, remember words and become confused and forgot things. There are four different stages each varying in severity. Depending on the type some medications can be used to control the symptoms. To care for someone would include supervision and help as certain abilities like walking start to fail. Physical restraint is not necessarily needed unless the person is confused and threatening harm to themselves. Psychological help is worthless because the person forgets what the psychologist has said or any other help offered. The best thing to do is to make them comfortable by reuring them and making them feels secure.