Dementia
Dementia (from L demens) is progressive decline in cognitive function due to damage or disease in the brain beyond what might be expected from normal ageing. Particulary affected areas may be memory, attention, language and problem solving, although particularly in the later stages of the condition, affected persons may be disoriented in time (not knowing what day, week, month or year it is), place (not knowing where they are) and person (not knowing who they are).
Affected persons may also show signs of psychosis and delirium.
Types
