Neurological
Medicines for Dementia with Lewy bodies
A type of dementia linked to tiny protein deposits in the brain, causing fluctuating alertness, visual hallucinations and movement problems similar to Parkinson's.
Education and reference only. This explains which medicines are used and why, in plain language — it deliberately contains no doses and is not a substitute for advice from your doctor or pharmacist. Always discuss your own treatment with a qualified clinician, and check the BNF and the product labelling for prescribing detail.
Quick answer
What is Dementia with Lewy bodies?
Dementia with Lewy bodies (DLB) is a common type of dementia caused by tiny abnormal protein deposits (Lewy bodies) building up inside brain cells. It shares features with both Alzheimer's disease and Parkinson's disease.
- How it is treated: There is no cure, so care focuses on managing the range of symptoms and supporting the person and family, with a coordinated, specialist approach.
- Self-care: A calm, structured environment, managing falls and safety, good sleep routines, carer support and education, and ensuring all clinicians know the diagnosis (given medication sensitivities) all help people with DLB and their families.
- When to seek help: See a GP about memory or thinking problems with fluctuating alertness, visual hallucinations, movement problems, or acting out dreams, for specialist assessment.
What it is
Dementia with Lewy bodies (DLB) is a common type of dementia caused by tiny abnormal protein deposits (Lewy bodies) building up inside brain cells. It shares features with both Alzheimer's disease and Parkinson's disease. As well as problems with thinking and memory, it has some distinctive features: alertness and thinking that fluctuate markedly (varying between good and confused periods, even over hours), detailed and recurrent visual hallucinations (often of people or animals), movement problems similar to Parkinson's disease (slowness, stiffness, tremor and unsteadiness, increasing falls), and acting out dreams during sleep. Fainting and sensitivity to certain medicines are also common. Recognising DLB matters because it is managed somewhat differently from other dementias, and because people with it can react badly to certain antipsychotic medicines, which need to be used with great caution.
How it is treated
There is no cure, so care focuses on managing the range of symptoms and supporting the person and family, with a coordinated, specialist approach. Some medicines used for Alzheimer's disease can help the thinking symptoms and hallucinations in DLB. Movement symptoms may be treated cautiously, balancing benefits against worsening other symptoms, and any treatment is carefully managed by specialists. Very importantly, certain antipsychotic medicines can cause severe reactions in DLB and are avoided or used with great caution — so it is important that the diagnosis is known. Managing sleep, falls, blood pressure and mood, and supporting daily living and carers, are all part of care. Because the picture is complex, input from specialists familiar with DLB is valuable, and a good understanding of the condition greatly helps families.
For this condition, these medicines
Medicine classes used for Dementia with Lewy bodies
Each links to a full, dose-free guide — what it is, how it works, who can and cannot use it, side effects, interactions and FAQs.
Beyond medication
Lifestyle and self-care
A calm, structured environment, managing falls and safety, good sleep routines, carer support and education, and ensuring all clinicians know the diagnosis (given medication sensitivities) all help people with DLB and their families.
When to get help
When to see a doctor
See a GP about memory or thinking problems with fluctuating alertness, visual hallucinations, movement problems, or acting out dreams, for specialist assessment. It is important the diagnosis is known, as some medicines must be avoided.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
Answers
Dementia with Lewy bodies: frequently asked questions
What is distinctive about dementia with Lewy bodies?
Alongside memory and thinking problems, it often causes markedly fluctuating alertness, detailed visual hallucinations, and Parkinson's-like movement problems. People with it can also react badly to certain antipsychotic medicines.
Why does the diagnosis matter for medication?
Because people with DLB can have severe reactions to certain antipsychotic medicines, which are therefore avoided or used with great caution. It is important that all clinicians involved know the diagnosis.
Sources
Where this is drawn from
- NHS — Dementia with Lewy bodies
- Alzheimer's Society guidance
Related conditions
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