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Alzheimer's disease accounts for 60–70% of cases of dementia worldwide. The most common symptoms of Alzheimer's disease are short-term memory loss and word-finding difficulties. Trouble with visuospatial functioning (getting lost often), reasoning, judgment and insight fail. Insight refers to whether or not the person realizes they have ...
Prognosis. Variable; average survival 4 years from diagnosis [ 8 ] Frequency. About 0.4% of persons older than 65 [ 9 ] Dementia with Lewy bodies (DLB) is a type of dementia characterized by changes in sleep, behavior, cognition, movement, and regulation of automatic bodily functions. Memory loss is not always an early symptom.
Alzheimer's disease (AD) is a progressive, degenerative and fatal brain disease, in which cell to cell connections in the brain are lost. Alzheimer's disease is the most common form of dementia. [2] Globally approximately 1–5% of the population is affected by Alzheimer's disease. [3] Women are disproportionately affected by Alzheimer's disease.
Signs and symptoms. Frontotemporal dementia is an early onset disorder that mostly occurs between the ages of 45 and 65, [13] but can begin earlier, and in 20–25% of cases onset is later. [11][14] Men and women appear to be equally affected. [15] It is the most common early presenting dementia. [16]
Normal aging is associated with a decline in various memory abilities in many cognitive tasks; the phenomenon is known as age-related memory impairment (AMI) or age-associated memory impairment (AAMI). The ability to encode new memories of events or facts and working memory shows decline in both cross-sectional and longitudinal studies. [8]
Medical condition Alzheimer's disease Other names Alzheimer's dementia Diagram of a normal brain compared to the brain of a person with Alzheimer's Pronunciation / ˈ æ l t s h aɪ m ər z ˈ ɑː l t s -/ Specialty Neurology Symptoms Memory loss, problems with language, disorientation, mood swings Complications Infections, falls and aspiration pneumonia in the terminal stage Usual onset Over ...