Dementia, Delirium and Alzheimer's Disease

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Apr 20, 2022

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Dementia, Delirium and Alzheimers Disease
Understanding the differences between these terms is a first step in understanding what may be going on with you, a family member, a friend, or colleague.
Dementia is often incorrectly used as an interchangeable term for Alzheimers Disease. Dementia does not define any specific disease, rather denotes that there are symptoms causing cognitive difficulties severe enough to interfere with daily live. These disorders cause the death of neurons (brain cells) or permanent damage to the neurons. Illnesses of dementia are generally of a gradual onset, while being progressive. At this time there are no known cures. Treatments are available to mitigate the severity of some symptoms such as behavioral therapies, person centered interventions, and in some instances medications.
Alzheimers Diseases (AD) is the most frequently occurring form of dementia with three distinct forms and one variant, affecting people from 30 years of age to over 85.
In addition to AD, some of the other forms are vascular dementia, Lewy Body Dementia, the Frontal Temporal Dementias, Parkinsonian Dementia, AIDS related dementia, Creutzfeldt-Jakob Disease and dementia due to a traumatic brain injury.
Delirium follows a time pattern with an abrupt onset, and of a short duration. Delirium can occur within a diagnosis of a dementia related illness, or when there is no such illness present. Delirium is a temporary event that can result in confusion, disorientation, changing levels of consciousness, hallucinations, delusions, anxiety, jerky movements, disturbed sleep cycles, memory impairment, periodic agitated behavior, mood changes, altered speech, and changes in blood pressure and pulse. Delirium can be treated and cured because it is caused by an underlying medical problem (such seemingly simple things as a bladder infection or constipation can precipitate a bout of dementia) drug toxicity (caused by taking medications improperly, incorrect dosage, incorrect medication, anesthesia, among other drug factors) and environmental factors (such as sensory overload, too much noise, sensory deprivation often stemming from isolation, and impaired hearing). Once the underlying cause of the delirium is treated the symptoms subside and the person returns to previous levels of functioning. Unlike dementia, delirium does not involve structural changes to the brain.Alzheimers & Dementia Resource Center is here to help you every step of the way, from initial concerns, to diagnosis, to treatment interventions, skill building, learning about the disease and understanding all the options available to you so that you and the person for whom you are caring can LIVE with a dementia related illness.
This article was written by Edith Gendron, Chief of Operations for the Alzheimers and Dementia Resource Center. She can be reached at 407-436-7750

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