Dementia is a general term for a group of symptoms caused by disorders that impair at least two brain functions, like memory or judgement. Alzheimer’s disease is the most common type of dementia.
People with dementia have significantly impaired cognitive functioning which interferes with every day activities, such as getting dressed or eating. People suffering with dementia may also have behavioral problems, such as agitation, or experience delusions or hallucinations. While memory loss is a common symptom of dementia, memory loss alone does not lead to a diagnosis of dementia. Doctors diagnose dementia only if two or more of the following brain functions are significantly impaired.