Lewy Body Dementia? Causes, Symptoms, and Treatments

Last Update on September 5, 2023 : Published on September 5, 2023

Lewy Body Dementia (LBD) is a complex and challenging neurological disorder affecting millions worldwide. When there is an abnormal deposition of protein cells called alpha-synuclein in the brain, a person suffers from LBD, leading to cognitive, movement, and sleep-related issues. Generally, older people at age 50 or more show signs of how sometimes younger people also sugar from LBD. The disorder seems to affect men more than women.

In this article, we’ll explore the critical aspects of Lewy Body Dementia, how it occurs, its signs and symptoms, and its treatment.

What is Lewy Body Dementia?

Lewy Body Dementia is a progressive brain disorder that starts slowly and progresses over time. It lasts an average of five to eight years, i.e., from diagnosis to death. However, some live less for only two years, and some survive for 20. The speed at which symptoms develop and change varies from person to person, which is why the life span also differs.

The early stages are usually mild; however, as the disease progresses, individuals with LBD need help as they face issues with thinking and movement. The disorder is known for its fluctuating symptoms and challenges in diagnosis due to its similarity to other conditions like Alzheimer’s and Parkinson’s.

Signs and Symptoms of Lewy Body Dementia:

Lewy Body Dementia (LBD) brings about a range of signs and symptoms affecting overall well-being. Therefore, to take appropriate care, we must understand its symptoms.

Fact Check – The actual cause of LBD is unknown. However, researchers are working on its biology and genetics to know the root cause.

1. Cognitive Symptoms:

 Memory Issues: Individuals with LBD might face problems in recalling and memorizing things. They often forget recent conversations and events.

Confusion: In LBD, as there is a loss of certain neurons and the product of neurotransmitters, individuals become disoriented or have trouble understanding their surroundings, leading to confusion.

Trouble Concentrating: Another risk factor of LBD is the inability to focus on things, which means individuals struggling with it fail to perform tasks that require attention.

Hallucinations: Visual hallucinations are another common sign of LBD. Here, individuals see things that are not present, and this leads to distress.

2. Movement Problems:

Tremors: Similar to Parkinson’s disease, LBD can cause tremors or shaking when resting.

Stiffness: Muscles become rigid, making movement slow and challenging.

Balance Issues: People with LBD also have difficulty maintaining balance and coordination, leading to falls. Their walks are often short, and it is a challenge for them to walk without shuffling.

3. Sleep Disturbances:

Vivid Dreams: LBD often leads to vivid and intense dreams, sometimes making it hard to distinguish dreams from reality. Also, nightmares are frequent. They are so intense that they affect the sleep cycle.

Sleepwalking: Some individuals might engage in activities like walking or talking during sleep. Also, they fell asleep throughout the day and struggled to be active.

4. Fluctuating Symptoms:

Good Days and Bad Days: LBD symptoms change rapidly; this is why some days seem better than others when the symptoms affect daily life functioning.

Mood Swings: Emotional ups and downs are common due to the fluctuating nature of the disorder.

5. Visual-Spatial Difficulties:

Depth Perception: Individuals struggling with LBD often are unable to understand spatial relationships. For them building an understanding seems challenging.

Object Recognition: Identifying objects or people might be difficult due to visual-spatial issues.

6. Autonomic Nervous System Dysfunction:

Blood Pressure Changes: Blood pressure fluctuations can cause dizziness or fainting.

Digestive Issues: Constipation and other digestive problems can arise.

Temperature Regulation: Individuals might struggle to regulate body temperature, leading to excessive sweating or chills.

7. Hallucinations and Delusions:

Visual Hallucinations: Seeing things that aren’t real, often involving people, animals, or objects.

Delusions: Holding onto false beliefs that don’t align with reality.

These are some common signs of LBD. However, it is important to remember that not everyone with LBD will experience all these symptoms. Some symptoms may overlap with other conditions like Alzheimer’s and Parkinson’s, making diagnosis and management challenging. If you or your loved one show these signs to be on the safer side it is best that you consult a doctor.

8. The Emotional Toll:

Lewy Body Dementia can be incredibly challenging for patients and their loved ones. The unpredictability of symptoms and cognitive and behavioral changes often take an emotional toll. Caregivers may experience frustration, sadness, and even isolation. Hence, it’s essential for families to seek support and education to cope with the emotional impact.

9. Diagnosis and Types:

Diagnosing LBD can be complex due to overlapping symptoms with other conditions. There are two main types: Dementia with Lewy bodies (DLB) and Parkinson’s disease dementia (PDD). A thorough medical history, neurological exams, and brain imaging are crucial for accurate diagnosis.

Medical History: Doctors to understand why a person is struggling with LBD to gather information about the individual’s family history of dementia or movement disorders.

Neurological Examination: A comprehensive neurological examination that assesses motor skills, reflexes, coordination, and sensory functions is conducted to understand the severity.

Cognitive Testing: Tests, memory evaluation, problem-solving, language, and other cognitive functions are performed to know how much cognition functioning is affected.

Brain Imaging: Imaging techniques like MRI or PET scans help detect changes in brain structure and activity, which can aid in diagnosis.

Types of Lewy Body Dementia:

There are two main types of Lewy Body Dementia, each presenting slightly different features:

Dementia with Lewy Bodies (DLB):

DLB is characterized by cognitive fluctuations, where mental abilities can vary widely daily or within a single day.

  • Visual hallucinations that might be vivid and recurring.
  • Tremors and stiffness, Parkinsonian motor symptoms, are also present.
  • Sleep disturbances, including acting out dreams and daytime sleepiness, are common.
  • Memory problems and cognitive decline become more prominent as the disease progresses.

Parkinson’s Disease Dementia (PDD):

PDD develops in individuals with Parkinson’s disease and later experience cognitive decline and dementia.

It’s important to understand that DLB and PDD exist on a spectrum, and sometimes identifying the differences is challenging because of the way they overlap.

Treatment and Care:

While there is no cure for LBD, managing symptoms can improve the quality of life. Treatment approaches include medications for cognitive and movement symptoms, lifestyle adjustments, and supportive therapies like physical and occupational therapy. Caregivers play a vital role in providing a safe and comfortable environment.

Managing Lewy Body Dementia:

Medications: To address LBD doctors generally prescribe medicine, which should be taken if you want to manage dementia. These drugs also help with memory and thinking problems. However, it is not a guaranteed way of treatment.

Parkinsonian Symptoms: Medicines used for Parkinson’s can sometimes help with tremors, stiffness, and movement issues. In addition to this, making changes to lifestyle and keeping a routine can help in controlling LBD and living a better life.

Physical Activity: Exercise, like walking or gentle stretches, can improve muscle strength and mood.

Healthy Diet: Eating well can support overall health, although swallowing difficulties might require dietary changes.

Communication: Patience and calm communication can help manage behavioral challenges and it also gives comfort to the person to pour their heart out.

Compassionate Care: Caring for someone with LBD requires empathy and understanding. Therefore, you need to be patient with them as their symptoms can be unpredictable.

Listen and Communicate: Encourage open conversations and listen to their concerns, even if they seem confused. Respect their feelings and maintain dignity when helping with daily activities.

Support Caregivers: Caregivers need support too. Don’t hesitate to seek help from friends, family, or support groups. Reduce stressors and create a calm, peaceful space to help manage anxiety and confusion for the individual and caregiver.

Different therapies can be useful:

Physical Therapy: This helps with movement and balance, reducing the risk of falls.

Occupational Therapy: It teaches skills to manage daily tasks independently.

Speech Therapy: For those with speech and swallowing difficulties.

Supportive Care: People with LBD and their caregivers benefit from:

Support Groups: Connecting with others who are going through similar challenges can provide emotional support and practical advice.

Education: Learning about LBD helps caregivers understand what to expect and how to provide the best care.

Creating a Safe Environment: Safety is crucial as LBD can cause falls and accidents:

Home Renovation: Removing tripping hazards and adding handrails can prevent falls.

Relation to Alzheimer’s and Parkinson’s:

As Alzheimer’s and Parkinson’s diseases also involve protein abnormalities in the brain LBD shares similarities. However, the way they impact life helps differentiate between them.

Shared Protein Deposits: All three conditions involve a protein called alpha-synuclein that clumps together in the brain. In LBD, these clumps are known as “Lewy bodies.” In Alzheimer’s, the protein beta-amyloid forms plaques, while in Parkinson’s, it’s the Lewy bodies.

Overlapping Symptoms: LBD, Alzheimer’s, and Parkinson’s can cause similar symptoms, like memory problems and changes in thinking. This can sometimes make it hard for doctors to tell them apart.

Brain Regions: While the three conditions affect different brain parts, there’s overlap. Alzheimer’s primarily impacts memory and thinking areas, LBD can affect memory, thinking, and movement, and Parkinson’s mainly affects movement-related regions.

Difference between LBD, Alzheimer’s, and Parkinson’s.

Lewy Body Dementia (LBD):

Hallucinations: Visual hallucinations are more common in LBD than Alzheimer’s or Parkinson’s.

Fluctuating Symptoms: People with LBD might have good days and bad days with changes in memory and thinking.

Parkinsonian Symptoms: Similar to Parkinson’s, LBD can lead to tremors and stiffness.

Alzheimer’s Disease:

Memory Issues: Alzheimer’s often begins with memory problems and progresses to affect other cognitive functions.

Confusion and Disorientation: People with Alzheimer’s tend to become more confused and disoriented as the disease advances.

Gradual Decline: Symptoms usually worsen over time, and individuals might have trouble recognizing loved ones.

Parkinson’s Disease:

Movement Challenges: Parkinson’s hallmark is movement problems, like tremors, stiffness, and difficulty walking.

Bradykinesia: Parkinson’s can slow movements and make everyday tasks more challenging.

Tremors: Resting tremors, where hands shake when at rest, are a common symptom.

Who Does LBD Affect, and How Common Is It?

LBD affects individuals across genders and ethnicities, usually occurring in older adults. It’s estimated to be the third most common cause of dementia after Alzheimer’s and vascular dementia. The prevalence of LBD highlights the need for greater awareness and research.

Affecting Individuals and Families:

Lewy Body Dementia (LBD) is a condition that can affect a wide range of people, but it’s more commonly found in older adults. It impacts the individuals who have it and has an emotional and practical effect on their families and caregivers. Here’s a closer look:

Older Adults: LBD most often appears in people over 50, but it can also affect younger people, though this is less common. It doesn’t discriminate based on gender. As it progresses, family members often become caregivers, helping with daily tasks and providing emotional support.

How Common Is LBD?

Lewy Body Dementia is not as well-known as conditions like Alzheimer’s, but it’s more common than you might think. It is considered one of the three most common types of dementia, alongside Alzheimer’s and vascular dementia. It’s believed that LBD accounts for about 10-15% of all dementia cases.

A Compassionate Approach

Caring for someone with Lewy Body Dementia requires a lot of patience, understanding, and a big heart full of compassion. The road ahead might be challenging, but it’s crucial to treat them with respect and offer comfort even when things get complicated.

By learning the techniques one can care for those struggling with LBD. A well-rounded approach to care can be a source of positivity for those facing the confusing world of this condition.

However, confusing and puzzling the symptoms can be if we understand them then help can be given to both the individual and the family. By helping others understand what LBD is all about, showing empathy, and sharing what we know, we’re building a safe space of support for those facing the challenges of LBD. If someone might have LBD, talking to a doctor who knows about it is a good idea.

Remember, there’s no magic cure for Lewy Body Dementia, but there are many ways to improve things. Treatments, exercises, and adjusting how they live can bring light into the lives of those with LBD and those who care about them. Lewy Body Dementia, Alzheimer’s, and Parkinson’s are connected by similar problems with specific proteins and symptoms. But each one has its own unique story that doctors can tell apart.

Understanding these connections can help doctors determine what’s going on and plan the best care. If you’re worried that you or someone close might be dealing with these conditions, don’t hesitate to ask doctors for advice. They can help point the way toward understanding and care.

Lewy Body Dementia can affect people from all walks of life, regardless of age or gender. It’s more common among older folks, but it can affect anyone. Therefore, be compassionate and build a caring and safe environment.

About The Author

Ayush Yadav
Ayush Yadav

Aayush is a writer, and storyteller who is passionate about using words to help drive positive change and make people aware about the history. He holds a bachelor's in law, lives in the princely state Jaipur and is passionate about helping people in anyway possible. In his spare time, he is usually out with friends and enjoys exploring different facets of life.


  1. Leslie Pettite
    Leslie Pettite

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