World Lewy Body Dementia (LBD) Day is observed annually on January 28th. This article will explain Lewy Body dementia symptoms, stages, and treatment options so seniors and families can make informed decisions.
What Is Lewy Body Dementia?
Lewy Body dementia (LBD) is a form of dementia that affects over 1 million people in the United States. LBD is the second most common neurodegenerative dementia behind Alzheimer’s disease.
With Lewy Body dementia, certain proteins called Lewy bodies build up in the brain cells and make thinking clearly and completing daily tasks more difficult. The disorder can lead to issues with thinking, behavior, sleep, movement, mood, and visual hallucinations.
According to Alzheimers.gov, LBD typically begins at age 50 or older, but can affect younger people, as well.
What is the Life Expectancy for Lewy Body Dementia?
From the time of diagnosis, those with LBD live an average of 5-8 years, but could live as few as 2 years or as many as 20. The rate at which symptoms develop and change varies based on the person’s overall health, age, and severity of symptoms.
What are the Risk Factors of Lewy Body Dementia?
While the exact causes of Lewy body dementia remain unknown, there are some risk factors. These include:
- Age: Advanced age is the greatest known risk factor for Lewy body dementia, which typically presents between the ages 50-85 years.
- Gender: Lewy body dementia is more common in men than in women
- Family history: While the hereditary nature of LBD is unknown, experts believe that those with a family history of LBD or Parkinson’s disease may be at greater risk
- Hypertension, hyperlipidemia, and diabetes mellitus: Studies show that conditions linked to vascular problems, such as hypertension, diabetes mellitus, and hyperlipidemia, are risk factors for Alzheimer’s and LBD
- Depression and loneliness: Studies have shown that depression increases the risk of LBD more strongly than it does in Alzheimer’s and Parkinson’s
Common Symptoms of Lewy Body Dementia
Lewy Body dementia can cause a wide range of symptoms that can vary from day to day and often overlap with other neurological conditions. According to Emory University’s Goizueta Alzheimer’s Disease Research Center, LBD symptoms can overlap with Alzheimer’s disease and Parkinson’s disease.
One of the defining features of LBD is that symptoms may fluctuate significantly, with bouts of clarity followed by sudden periods of confusion or decline. These changes can be unsettling for both seniors and their caregivers.
Some other symptoms of LBD, according to the Cleveland Clinic, are as follows:
Cognitive and Thinking Changes
Cognitive symptoms in Lewy Body dementia often appear earlier than memory loss. These can include:
- Difficulty with attention, focus, and problem-solving
- Confusion that comes and goes throughout the day and can be delirium-like, according to the Alzheimer’s Association
- Slowed thinking or difficulty processing information
- Memory loss that may be milder in the early stages compared to Alzheimer’s disease
These cognitive fluctuations are a hallmark of LBD and are often one of the first signs families notice.
Visual Hallucinations
Many people with Lewy Body dementia experience recurrent visual hallucinations, sometimes early in the disease process. These hallucinations may include seeing people, animals, or objects that are not present but often feel very real to the person experiencing them.
While not always distressing at first, hallucinations can become more frequent or frightening as the disease progresses.
Movement and Physical Symptoms
Lewy Body dementia commonly affects movement in ways similar to Parkinson’s disease, including:
- Muscle stiffness or rigidity
- Shuffling gait or slowed walking
- Tremors
- Balance problems and increased risk of falls
These physical symptoms often worsen over time and can significantly impact safety and mobility.
Sleep Disturbances
Sleep issues are especially common in Lewy Body dementia. One notable symptom is REM sleep behavior disorder, where a person may physically act out dreams. This can entail talking, yelling, or moving during sleep. Excessive daytime sleepiness and irregular sleep patterns can also be common.
Behavioral and Mood Changes
Changes in behavior and mood may include:
- Depression or anxiety
- Apathy or withdrawal from activities
- Increased irritability or agitation
- Paranoia or delusions
These emotional and behavioral symptoms can place significant strain on caregivers and often signal a growing need for structured support.
Nervous system symptoms (dysautonomia)
With Lewy Body dementia, problems might occur with the body’s automatic functions, such as:
- Body temperature changes
- Blood pressure (high or low)
- Constipation
- Dizziness
- Fainting
- Incontinence
- Losing sense of smell (which can be an early indicator of the disease)
Stages of Lewy Body Dementia
According to the Lewy Body Dementia Resource Center, experts often describe LBD as having 7 stages:
- Preclinical Stage: No cognitive decline visible, but silent changes are beginning to form in the brain
- Very Mild Cognitive Decline: Small memory slips start to appear but can be overlooked as “just aging”
- Mild Cognitive Decline: Cognitive changes become more obvious; subtle shifts in movement may arise; dips in mood or energy can begin
- Mild Dementia/Moderate Cognitive Decline: This stage is when Lewy Body dementia is often diagnosed; effects on daily life become much more visible; changes in speech and movement become apparent; hallucinations and large swings in mood become more common
- Moderate Dementia/Moderately Severe Cognitive Decline: Forgetting or confusing people and names, conversational difficulties, intensified hallucinations and delusions, shakier balance, and difficulty regulating blood pressure, temperature, and digestion
- Severe Cognitive Decline/Moderately Severe Dementia: Severe memory loss, inability to recognize friends or family most of the time (with some moments of recognition), short-term memory and speech fade, walking difficulties, muscle weakness, swallowing issues
- Late-Stage Lewy Body Dementia/Very Severe Cognitive Decline: May no longer speak, sit up, or swallow easily; facial expressions fade; becoming bedridden becomes common; full-time care usually needed (typically lasts 1.5 – 2.5 years)
While every person’s progression through Lewy Body dementia can differ, knowing generally what to expect with each stage helps families prepare for changes, plan for care, and make informed decisions.
Lewy Body Dementia vs. Alzheimer’s vs. Parkinson’s
Lewy Body dementia is often misunderstood and frequently misdiagnosed because it shares symptoms with both Alzheimer’s disease and Parkinson’s disease. However, there are key differences that set Lewy Body dementia apart and affect how the condition is managed.
Lewy Body Dementia vs. Alzheimer’s Disease
While both conditions cause cognitive decline, they typically progress in different ways.
In Alzheimer’s disease:
- Memory loss is usually the earliest and most prominent symptom
- Hallucinations tend to occur later, if at all
- Cognitive decline is more steady and predictable
In Lewy Body dementia:
- Attention, alertness, and thinking fluctuate from day to day or even hour to hour
- Visual hallucinations often appear early
- Memory may be relatively preserved in early stages compared to Alzheimer’s
- Individuals are often extremely sensitive to certain antipsychotic medications
Because memory loss may not be the first symptom, Lewy Body dementia is sometimes overlooked or mistaken for another condition.
Lewy Body Dementia vs. Parkinson’s Disease
Lewy Body dementia and Parkinson’s disease are closely related and share many physical symptoms, but timing is a key distinction.
In Parkinson’s disease:
- Movement symptoms appear first, sometimes years before cognitive decline
- Dementia may develop later in the disease
In Lewy Body dementia:
- Cognitive symptoms appear first or around the same time as movement problems
- Hallucinations, sleep disturbances, and confusion are often present early
- Both movement and cognitive symptoms tend to progress together
This overlap often leads to confusion during diagnosis, especially in the early stages.
Lewy Body Dementia, Alzheimer’s, and Parkinson’s Comparison Chart
| Feature | Lewy Body Dementia | Alzheimer’s | Parkinson’s |
|---|---|---|---|
| Primary Early Symptom | Fluctuating cognition, attention changes, hallucinations | Memory loss | Movement problems (tremor, rigidity) |
| Memory Loss | Often mild in early stages | Prominent and early | May occur later, if at all |
| Cognitive Fluctuations | Very common; symptoms vary day to day | Rare | Possible in later stages |
| Visual Hallucinations | Common and often early | Usually late or uncommon | Can occur, especially later |
| Movement Symptoms | Parkinson’s-like symptoms common | Usually appear late | Core feature from early stages |
| Sleep Disturbances | REM sleep behavior disorder common | Less common | Common |
| Response to Antipsychotic Medications | High sensitivity; can worsen symptoms | Generally better tolerated | Variable |
| Progression Pattern | Cognitive and physical symptoms progress together | Gradual cognitive decline | Motor symptoms first, cognition later |
| Care Needs | Complex early; often requires memory care | Gradual increase over time | Increasing care as disease progresses |
While Lewy Body dementia, Alzheimer’s, and Parkinson’s share overlapping symptoms, the early presence of hallucinations, cognitive fluctuations, and medication sensitivity makes Lewy Body dementia uniquely challenging.
Why These Differences Matter
Understanding the differences between Lewy Body dementia, Alzheimer’s disease, and Parkinson’s disease is critical because:
- Treatment approaches differ
- Medication sensitivity is higher in Lewy Body dementia
- Care needs often become more complex earlier in the disease
- Safety risks such as falls, hallucinations, and nighttime behaviors may appear sooner
Accurate diagnoses helps families plan more effectively and choose care environments that are equipped to manage the unique challenges of Lewy Body dementia.
How Is Lewy Body Dementia Diagnosed?
There is no single test for diagnosing Lewy Body dementia. For this reason, a thorough medical evaluation is needed.
According to the Glenn Biggs Institute for Alzheimer’s and Neurodegenerative Diseases, medical professionals may test for other conditions that can cause dementia-like symptoms, which can include:
- Depression
- Thyroid problems
- Vitamin B12 deficiency
- Other conditions
These evaluations may include:
- Review of medical history
- Physical examination
- Neurological testing
- Psychiatric evaluation
- Cognitive and neuropsychological tests
- Genetic testing
- Laboratory testing
- Brain imaging
- Sleep study
Lewy Body Dementia Treatment and Management Options
There are currently no medications that reverse or slow Lewy Body Dementia. However, there are treatments intended to relieve symptoms and promote safety.
According to the Parkinson’s Foundation, those with LBD benefit most from a team-based approach to care. Comprehensive treatments for relieving symptoms can include:
- Medications to improve cognitive symptoms, like donepezil (Apricept), galantamine (Razadyne), and rivastigmine (Exelon)
- Certain SSRIs and SNRIs to treat depression and anxiety
- Medications for reducing hallucinations, including clozapine (Clozaril), quetiapine (Seroquel) and pimavanserin (Nuplazid)
- Medications to treat REM Sleep Behavior Disorder (RBD) like melatonin or clonazepam
- Meditation and counseling
- Physical and mental exercise
When Is Memory Care the Right Choice for Lewy Body Dementia?
Determining care for someone with LBD can be especially challenging since the disease does not progress in a straight line. Families often describe it as unpredictable, with good days followed by sudden declines. Memory care often becomes the safest and most supportive option for someone with more advanced LBD.
Some common indicators that memory care may be the most appropriate setting for LBD are as follows:
Safety is becoming a daily concern
Safety concerns with LBD can include visual hallucinations, confusion, Parkinson’s-like movement difficulties, wandering, getting lost, engaging in unsafe behaviors, falling frequently, or having trouble recognizing surroundings.
In these circumstances, memory care communities are designed with secured layouts, fall-reduction features, and 24/7 supervision to reduce these risks.
Hallucinations or delusions are increasing
Hallucinations and delusions are a significant feature of LBD. Memory care can be a wise choice when these hallucinations become more frequent, difficult to redirect, and distressing, frightening, or agitating to the senior. In a memory care community, trained staff members know how to respond calmly and appropriately without escalating symptoms.
Daily activities require more constant help
Individuals with LBD often eventually need help with activities of daily living (ADLs), such as dressing, bathing, toileting, and eating. Memory care can provide structured support throughout the day, rather than relying on exhausted family caregivers to fill in every gap.
Sleep disruptions are becoming more severe or common
People with LBD often experience REM sleep behavior disorder (RBD), nighttime confusion, or reversed sleep cycles. Warning signs that these sleep disruptions have escalated include:
- Being awake and active most of the night
- Acting out dreams or becoming disoriented after dark (also known as sundowning)
- Family caregivers losing sleep or feeling unsafe at night
Memory care teams are equipped to manage nighttime behaviors while keeping residents and families safe.
Caregiver burnout has escalated
One of the most important signs that someone may need memory care is caregiver burnout or exhaustion. If a caregiver is feeling any of the following, memory care could be the next best step:
- Constantly on edge
- Emotionally drained
- Unable to leave the house or take breaks
- Anxious about what might happen if they are not present
- Decline in physical and mental health
- Mood swings
- Lack of sleep
For caregivers, choosing memory care is not giving up. Rather, it is making a sustainable, compassionate decision for the well-being of everyone involved.
Why Memory Care Works Well for Lewy Body Dementia
Memory care communities are well-suited to care for residents with Lewy Body dementia. The right memory care community offers:
- Staff that is specially trained in dementia and movement disorders
- Predictable routines that reduce confusion
- Calmer environments with less overstimulation
- Support with complex medication needs
- Social engagement tailored to cognitive ability
- Opportunities to engage in meaningful, appropriate activities and events
For many families, memory care brings an unexpected sense of relief. It allows them to return to being a spouse, child, or partner, rather than a full-time caregiver.
How Senior Consulting Advisors Can Help
Navigating Lewy Body dementia can feel overwhelming, especially as symptoms change unpredictably.
Senior Consulting Advisors helps families understand care options, identify memory care communities experienced with complex dementias, and make confident decisions during an uncertain time.
As Florida’s top senior living experts, our advisors know the best memory care communities in every city in Florida. We can advise you – at no cost – on the best communities for your loved one that fit your budget.
We also help with every step of your move and continue to check in with you after the move to ensure your satisfaction and care.
To speak to an advisor for free, call us at (800) 969-7176 or visit SeniorConsultingAdvisor.com.
