Dementia with Lewy bodies (DLB) is a type of progressive dementia that leads to a decline in thinking, reasoning, and independent function due to abnormal microscopic deposits that damage brain cells over time. These deposits, called Lewy bodies, contain a protein associated with Parkinson’s disease and some forms of dementia.

This disease shares characteristics with both Alzheimer’s and Parkinson’s diseases. Some symptoms may resemble those of Alzheimer’s, including significant memory loss that disrupts daily living, confusion, and a fluctuation in cognitive abilities. These fluctuations may include periods of alertness and clarity followed by periods of confusion, attention and thinking problems.


Also, as with Parkinson’s disease, people with DLB often experience visual hallucinations, muscle rigidity, and tremors. They may have a shuffle-like walk because their movements may be slower or they may have difficulty walking, balance problems, and may fall frequently.

DLB is the third most common cause of dementia after Alzheimer’s disease and vascular dementia. It affects both men and women, generally those over the age of 60. Diagnosis can be challenging because its symptoms can closely resemble those of other dementia-related diseases.

Causes of Dementia with Lewy bodies

Dementia with Lewy bodies (DLB) is a type of progressive dementia that leads to a decline in thinking, reasoning, and independent function due to abnormal microscopic deposits that damage brain cells over time. These deposits, named after Frederic H. Lewy, M.D., the neurologist who discovered them while researching Parkinson’s disease, are accumulations of protein alpha-synuclein.

The exact cause of Dementia with Lewy bodies is not clear, but the disorder is thought to be related to two factors:

1. Buildup of Lewy bodies: These are abnormal clumps of protein (alpha-synuclein) that can cause problems with the way your brain works, including your memory, perception and motor control.

2. Neurotransmitter problems: There’s often a decrease in certain chemicals in the brain, such as acetylcholine and dopamine. These neurotransmitters are involved in many important functions, such as motivation, attention, learning, and pleasure.

Risk factors may include age (those who are older have a higher risk), gender (men are more likely to develop DLB than women), and a family history of DLB or Parkinson’s disease. However, the exact cause of the protein buildup isn’t known, so further research is needed.

Risk Factors of Dementia with Lewy bodies

1. Age: The risk for Dementia with Lewy bodies (DLB) increases with age, as is common with many types of dementia. Most people who develop this disorder are over the age of 60.

2. Gender: Men appear to be more likely to develop DLB than women.

3. Family History: A person with a family member who has had DLB or Parkinson’s disease is at a slightly higher risk.

4. Genetic Factors: There are certain genes associated with DLB. Those who carry these genes might have an increased risk, but this is not a definitive predictor as many people who develop the disease do not have these genetic markers.

5. Parkinson’s Disease: Those who have or had Parkinson’s disease or REM sleep behavior disorder are also more likely to develop DLb, as there is some link between these disorders.

6. Other Neurodegenerative Diseases: Those with Alzheimer’s disease, or other neurodegenerative disease might have an increased risk of developing DLB, but this remains a relatively less understood area and research is ongoing.

Remember that risk factors do not guarantee that someone will develop a disease. They simply represent a higher level of risk compared to those without these factors.

As always, regular check-ups, maintaining a healthy lifestyle, and good communication with healthcare providers can help manage these risk factors.

Signs and Symptoms of Dementia with Lewy bodies

Dementia with Lewy bodies (DLB) is a type of progressive dementia that affects cognition, behavior, and movements. Here are some cardinal signs and symptoms associated with DLB:

Cognitive symptoms:
1. Cognitive decline: The most common sign of any type of dementia, including DLB, is a progressive cognitive impairment. This typically involves issues with attention, problem-solving, complex mental activities, etc.
2. Memory Loss: Unlike Alzheimer’s, in DLB, memory loss is not a prominent symptom especially in the early stages, but it appears as the disease progresses.

Behavioral symptoms:
1. Visual Hallucinations: One of the most distinctive symptoms of DLB is persistent visual hallucinations which could range from inanimate objects, animals, or people that don’t exist.
2. Mood changes: People with DLB often exhibit mood changes like depression, apathy, and anxiety.

Physical symptoms:
1. Motor disorder: DLB often presents signs similar to Parkinson’s disease such as rigid muscles, slow movement and a shuffling walk. Tremors may also develop but they are not as common as in Parkinson’s.
2. Sleep Disorder: People with DLB often suffer from severe disorders of sleep such as REM sleep behavior disorder. They can act out dreams, which sometimes involve violent movements.
3. Autonomic dysfunction: These are problems with “automatic” body functions like blood pressure regulation (postural hypotension), urinary incontinence and constipation.

Fluctuating level of attention or alertness, fluctuating cognition, and detailed visual hallucinations are considered core features of DLB. However, diagnosis is quite challenging and should be undertaken by a medical professional as it shares many symptoms with Parkinson’s disease and Alzheimer’s disease.

Diagnosis Dementia with Lewy bodies

Dementia with Lewy bodies (DLB) is a type of progressive dementia that leads to a decline in thinking, reasoning, and independent function due to abnormal microscopic deposits that damage brain cells over time. These deposits, called Lewy bodies, are named after Dr. Friedrich Heinrich Lewy, the neurologist who discovered them while researching Parkinson’s disease.

DLB is one of the most common types of progressive dementia, sharing similarities with both Alzheimer’s and Parkinson’s diseases. Its key features often involve cognitive symptoms such as attention and visual-spatial problems, more so than memory problems, which tend to manifest in the later stages.

Unpredictable cognitive function, vivid visual hallucinations, and motor symptoms such as slowness, gait imbalance or tremor are also common in this disease. Other features may include depression, sleep disorders, and autonomic dysfunction that might affect blood pressure, heart rate, digestion, and other automatic bodily functions.

Diagnosis of DLY can be challenging as its symptoms can resemble other types of neurological disorders. A combination of Neurological examination, neuropsychological testing, brain imaging, and careful observation of symptoms over time are the common methods healthcare professionals may use to approach this diagnosis.

There is currently no cure for DLB, but medications can help manage some of the symptoms. The person’s environment can also be modified to provide support and reduce anxiety and confusion.

Treatment of Dementia with Lewy bodies

Dementia with Lewy Bodies (DLB) is a complex condition that requires a multi-faceted approach to treatment. While there is currently no cure for DLB, treatments can help manage some of its symptoms and improve the quality of life for people who have it.

1. Medication: Some Alzheimer’s disease drugs, such as donepezil and rivastigmine, may help improve cognition and hallucinations. Anti-psychotics can also provide short-term relief for hallucinations and delusions, but should be used with caution in people with DLB because they can cause severe physical side-effects. Certain medications may be used to manage movement symptoms, but there is also a risk of worsening the neurologic symptoms.

2. Physical Therapy: Although dementia itself cannot be treated with physical therapy, it can help manage other symptoms. Physical therapy can help improve mobility, balance, and motor skills, reducing the risk of falls and injuries.

3. Occupational Therapy: Occupational therapists can help devise strategies for dealing with daily activities and improve patient safety.

4. Speech and Language Therapy: This can help manage problems with swallowing or speaking that may arise as DLB progresses.

5. Supportive care: Careful attention to nutrition, regular exercise and regular sleep habits, and management of co-existing conditions such as diabetes or heart disease are key aspects of non-pharmacologic care.

6. Emotional Support: Support for patients and caregivers is crucial, as DLB can cause significant emotional distress. Access to counseling or support groups can make a big difference in the overall quality of life for those affected by DLB.

Overall, the treatment plan needs to be individualized to the person’s symptoms and circumstances, and monitored and adjusted regularly to ensure the best possible quality of life.

It’s critically important to have regular check-ups with a healthcare provider to manage this condition, as dementia with Lewy bodies can cause severe cognitive and physical impairments. It’s also important to note that if this or any other form of dementia is suspected, immediate medical advice should be sought. Diagnosis and treatment at an early stage can significantly improve the quality of life for people living with dementia.

Medications commonly used for Dementia with Lewy bodies

There are several types of medications that are commonly used to treat dementia with Lewy bodies (DLB). Keep in mind that DLB can manifest in various ways such as cognitive impairment, hallucinations, and motor symptoms, so medications can vary based on the individual’s unique symptoms. Unfortunately, there’s no cure for DLB yet, but the symptoms can be managed with medication to improve quality of life:

1. Cholinesterase inhibitors: Donepezil (Aricept) and Rivastigmine (Exelon) are generally prescribed for DLB. They could significantly improve cognition, hallucinations, and overall behavior. These medications work by enhancing communication between nerve cells.

2. Antipsychotic Medications: DLB patients often experience visual hallucinations or delusions. Antipsychotics like Quetiapine (Seroquel) or Clozapine can be helpful in controlling these symptoms, but they must be used cautiously in DLB patients because they could potentially exacerbate motor symptoms and cognitive impairment.

3. Parkinson’s Disease Medications: Because individuals with DLB often have Parkinson-like symptoms, medications such as Carbidopa/Levodopa can be used to alleviate some of these symptoms.

4. Medications for Mood Disorders: Many patients with DLB experience depression or anxiety. In such cases, selective serotonin reuptake inhibitors (SSRIs) or serotonin and norepinephrine reuptake inhibitors (SNRIs) may be used.

5. Medications to improve sleep: DLB patients often have sleep disorders such as REM sleep behavior disorder. Clonazepam and Melatonin can help with this issue.

It’s important to remember that every patient is unique, and medication plans should be individualized, based on the person’s specific condition and response to the medication. Always discuss potential side effects and benefits of any medication with a healthcare provider.

Prevention of Dementia with Lewy bodies

As of now, there’s no proven way to prevent dementia with Lewy bodies (DLB). However, leading a healthy lifestyle might help reduce the risk, slow the progression, and improve symptoms. Here are some general guidelines:

1. Regular Physical Activity: Exercise helps maintain good blood flow to the brain and encourages the growth of new brain cells. It also can significantly reduce the risk of heart conditions that could lead to further brain damage.

2. Healthy Diet: A diet rich in fruits, vegetables, lean protein, and healthy fats can protect the brain. Some people opt for a “Mediterranean Diet”, which emphasizes fish, nuts, vegetables, and fruit, with moderate alcohol and little red meat.

3. Mental Stimulation: Continuous engagement in problem-solving, learning, and memory exercises can help keep the brain active and slow cognitive decline.

4. Social Engagement: Interacting with others regularly can reduce stress, fight depression and keep the brain active and healthy.

5. Regular Check-ups: Regular medical check-ups can help detect problems early before they become serious. This includes regular screenings for hearing and vision loss, as these can contribute to cognitive issues if left untreated.

6. Avoid Unhealthy Habits: Avoid smoking and limit alcohol consumption, as they can increase the risk of dementia.

7. Control Blood Pressure: Keeping blood pressure levels normal can significantly reduce the risk of DLB.

8. Sleep well: Adequate, good quality sleep is beneficial for brain health.

Bear in mind that these are general guidelines. Genetic factors also play a significant role in the development of DLB and other forms of dementia. Therefore, it’s important to consult with a healthcare professional for personalized advice on managing health and reducing the risk of illnesses.

FAQ’s about Dementia with Lewy bodies

Dementia with Lewy bodies (DLB) is a type of progressive dementia that leads to a decline in thinking, reasoning and independent function due to abnormal microscopic deposits that damage brain cells.

1. What are the symptoms of Dementia with Lewy bodies?
Symptoms can range from traditional dementia symptoms like memory loss and cognitive decline, to more distinctive ones like visual hallucinations, Parkinson’s disease-like symptoms, difficulty with attention and alertness, and profound sleep disorders.

2. What causes Dementia with Lewy bodies?
This dementia type is caused by the build-up of proteins, called alpha-synuclein, in areas of the brain that manage thinking, memory, and motor control. The exact reason for alpha-synuclein accumulation is still currently unknown.

3. How is Dementia with Lewy bodies diagnosed?
DLB is generally diagnosed based on a person’s symptoms, including cognitive decline and the potential presence of Parkinson’s disease-like symptoms. Doctors may also use brain imaging, mental status assessments and neurological examinations.

4. How does Dementia with Lewy bodies progress?
DLB is a progressive disease, which means symptoms get worse over time. Severity and progression can vary from person to person, but generally physical symptoms appear before cognitive ones.

5. What treatments are available for Dementia with Lewy bodies?
While there is currently no cure for DLB, treatments can improve some symptoms. These aims at managing the cognitive, psychiatric and motor symptoms, and may involve medications, physical therapy, and occupational therapy.

6. Is Dementia with Lewy bodies hereditary?
While most cases of DLB are not inherited, having a family member with DLB is thought to slightly increase a person’s risk. Some rare genetic mutations are associated with higher risk.

7. What is the life expectancy with Dementia with Lewy bodies?
Life expectancy varies significantly from person to person, but on average, individuals may live for 5 to 8 years after the onset of symptoms.

8. How is Dementia with Lewy bodies different from Alzheimer’s disease or Parkinson’s disease dementia?
DLB, Alzheimer’s, and Parkinson’s dementia are all types of dementia, but they have different primary symptoms, progression, and brain abnormalities. For example, memory loss tends to be a more prominent symptom in Alzheimer’s, while motor symptoms are more typical in Parkinson’s. In DLB, cognitive symptoms can fluctuate and visual hallucinations may be common.

Remember to always consult with a healthcare provider for proper diagnosis and treatment. This information should be seen as a guide and not a replacement for medical advice.

Useful links

Dementia with Lewy bodies (DLB) is a type of progressive dementia that leads to a decline in thinking, reasoning, and independent function. It’s marked by the presence of Lewy bodies, which are clumps of specific substances within brain cells that are indicators of the disease.

Here are a few useful links from journals that you might find helpful:


Remember, these are all scientific articles. While they’re high-quality sources of information, they can be quite technical. If you’re not a healthcare professional, you might want to consult one for an interpretation of these publications.

Complications of Dementia with Lewy bodies

Dementia with Lewy bodies (DLB) is a complex condition which can bring a range of complications, affecting both physical and mental health.

1. Cognitive Complications: DLB is characterized by progressive cognitive decline, which typically begins with problems with attention and executive function, such as planning, processing, and completing complex tasks. As the disease progresses, memory and visuospatial abilities may also deteriorate. Fluctuations in cognitive abilities are common, making the disease difficult to predict and manage.

2. Neuropsychiatric Complications: People with DLB often experience visual hallucinations and certain psychiatric symptoms such as depression, apathy, and anxiety. Some patients could also develop delusions or other types of hallucinations (auditory, tactile, etc.).

3. Parkinsonism: People with DLB often have motor symptoms that resemble those of Parkinson’s disease, including rigidity, bradykinesia (slow movement), tremor and problems with balance.

4. Autonomic Dysfunction: This relates to the functions that your body normally controls automatically, such as blood pressure, heart rate, bowel and bladder function. In DLB, these can become problematic. For example, orthostatic hypotension – a sudden drop in blood pressure when standing up, can lead to dizziness, falls and fainting.

5. Sleep-related complications: People with DLB often experience sleep disorders like REM sleep behavior disorder, which makes them physically act out their dreams. Sleep-related issues can significantly affect quality of life and general health.

6. Sensitivity to Antipsychotic Medication: People with DLB often have severe reactions to certain types of medication, particularly antipsychotics which could lead to severe physical complications, such as severe rigidity or immobility, or worsening cognitive and psychotic symptoms.

Each individual can experience DLB differently, with a unique combination of symptoms and complications. The range and severity of complications can make DLB an especially challenging form of dementia to manage and live with.

Home remedies of Dementia with Lewy bodies

Dementia with Lewy bodies (DLB) is a complex, progressive neurological disorder that often includes symptoms like memory loss, visual hallucinations, and motor symptoms similar to Parkinson’s disease. While there is no known cure, specific strategies may help manage its symptoms. Always consult with a healthcare professional before starting any new treatment strategies. Here are a few potential home remedies or lifestyle adjustments that could help manage symptoms:

1. Healthy Diet: A balanced diet rich in fruits, vegetables, lean proteins and healthy fats may support general health and cognitive function. Some research suggests that a Mediterranean-style diet could be particularly beneficial for brain health.

2. Regular Exercise: Consistent physical activity may help enhance mood, improve sleep, and manage symptoms related to mobility and balance.

3. Mind-Body Practices: Techniques like yoga, tai chi, or meditation may help enhance flexibility, balance, and relaxation, potentially reducing anxiety and improving sleep quality.

4. Mental Exercises: Activities that challenge the brain like puzzles, reading, writing, or learning new skills can potentially help slow cognitive decline.

5. Social Activity: Engaging with friends and family, joining support groups or community organizations can promote a sense of well-being and potentially help slow cognitive decline.

6. Good Sleep Hygiene: Maintaining regular sleep-wake cycles can improve daytime alertness and reduce behavior problems. Avoid caffeine, keep the sleep environment calm and quiet, and establish regular bedtime routines.

7. Limit Alcohol: Excessive alcohol can interfere with medications and make certain symptoms worse.

8. Avoid Anticholinergic Drugs: These can worsen cognitive and physical symptoms for some people. Always talk to your doctor before starting or stopping any medications.

It’s important to remember that these tips are supportive strategies and cannot reverse the progression of Dementia with Lewy bodies. Medical treatment under the guidance of a healthcare provider remains essential for managing DLB. It’s also important to note that the effectiveness of home remedies can vary greatly depending on the individual and stage of the disease.

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Mental Health,

Last Update: January 9, 2024