____________________ Alzheimer’s Disease and Dementias: Insights for Early Detection and Care Planning
TYPES OF DEMENTIA (Continued)
Disease
Symptoms
Attributes/Causation
Normal pressure hydrocephalus (NPH)
Difficulty walking, shuffling gait, and balance problems Memory loss, confusion, and difficulty with attention and decision-making Urinary incontinence and urgency Difficulty with balance and walking, frequent falls, and stiffness Difficulty moving the eyes, particularly in the vertical direction Executive dysfunction, slowed thinking, and memory problems Apathy, depression, and personality changes
Caused by an abnormal buildup of cerebrospinal fluid (CSF) in the brain’s ventricles, leading to increased pressure and damage to brain tissues
Progressive supranuclear palsy (PSP)
Caused by the accumulation of tau protein in the brain, leading to the degeneration of specific brain regions, particularly those involved in movement and cognitive function
Source: [6; 7; 8; 9; 10; 11]
Table 1
The exact cause of Alzheimer disease is not fully understood but is believed to involve genetic, environmental, and lifestyle factors. Major risk factors include age (primarily affecting those older than 65 years of age) and gender (more common in women). Other risks include family history, genetic muta- tions, and conditions like cardiovascular disease and diabetes. There is no cure, but treatments can temporarily slow symptom progression and improve quality of life. Ongoing research aims to uncover the disease’s mechanisms and develop more effective therapies [4; 10]. THE LONG PRECLINICAL PHASE OF ALZHEIMER DISEASE Research indicates that Alzheimer disease can begin 20 years or more before clinical symptoms appear [12; 13]. During this preclinical phase, amyloid-beta plaques and tau tangles accumulate in the brain, disrupting neuronal function and leading to gradual brain cell death. This period is marked by subtle brain changes that are not yet noticeable. Advanced imaging techniques and biomark- ers, like cerebrospinal fluid analysis, can detect these early changes, offering insights into disease progression [2]. Identi- fying individuals in this stage is crucial for early intervention and developing treatments to slow or halt the disease before significant cognitive impairment occurs. Recognizing that Alzheimer disease starts decades before symp- toms manifest highlights the importance of early detection and monitoring. It also emphasizes the need for ongoing research to develop preventive strategies and treatments targeting the disease’s earliest stages. By focusing on the preclinical phase, healthcare providers can better manage the eventual onset of symptoms, improving outcomes for patients and their families.
IMPACT ON PATIENTS AND FAMILIES The impact of Alzheimer disease and related dementias (ADRDs) extends beyond the individual, profoundly affecting families and caregivers emotionally, physically, and financially. Patients with dementia experience a progressive decline in cog- nitive function, leading to increased dependency on caregivers for daily activities. This results in significant stress, burnout, and a need for support among caregivers [4]. The economic burden of dementia is substantial. In the United States, the total cost of care for individuals with Alzheimer disease and other dementias was estimated at $321 billion in 2022, with projections reaching nearly $1 trillion by 2050 due to rising prevalence and healthcare costs. These costs include medical care, long-term care, and the value of unpaid caregiv- ing by family members [4]. Early detection and diagnosis of dementia are crucial for man- aging symptoms, planning for the future, and improving the quality of life for those affected. Understanding the prevalence and impact of dementia is essential for developing effective strategies and support systems to address this growing public health challenge. ALZHEIMER DISEASE Alzheimer disease is a progressive neurodegenerative disorder affecting older adults, leading to significant cognitive decline that interferes with daily life. It is the most common form of dementia, accounting for 60% to 70% of cases [1]. The disease is marked by amyloid plaques and tau tangles in the brain, disrupting neuronal communication and causing cell death. Early symptoms include memory loss, difficulty in planning and problem-solving, and challenges with language and spatial awareness. As it progresses, individuals may experience severe memory impairment, confusion, mood changes, and difficulty with basic activities [12].
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