Persons with dementia may gradually lose their so-called "internal critics" that would tell them what things are and are not appropriate to do in public or in certain company. For instance, some will use curse words or seek out alcohol more frequently as the disease progresses. Curse words, obscenities, and similar behaviors are some of the most taboo and sometimes most basic forms of expression that someone can use. When a person with dementia is surprised or frustrated, these words might spring to mind.
Similarly, people with some forms of dementia may no longer recognize what is considered socially or sexually appropriate. For instance, a person with dementia may try to shoplift or take off his pants when you have visitors. He may try to seek out intimacy more often - sometimes even with complete strangers. If inappropriate behaviour presents problems or is disturbing, caregivers should be respectful but firm. If they are unable to calm or refocus them on another activity or task, it may be best to remove them from the situation.
Dementia can be a frightening and worrying process for individuals as they lose their abilities and independence.
Many individuals with dementia also experience depression. Loss of mobility, interactions with the world, and independence can result in a loss of appetite, fatigue, and a lack of interest in daily activities.
As dementia progresses, the grasp on the difference between fact and fiction, real and imagined, becomes blurred. Sometimes, the person may become agitated, uncooperative, or even hostile.
Individuals with dementia can also have difficulties getting to sleep or staying asleep. Many of the medications commonly prescribed to dementia patients can fatigue them during the day. This may make it harder for them to get to sleep or to sleep through the night.
Emotional outbursts may also be an indication of untreated pain that the person cannot describe;