Learning
Lewy body dementia
Lewy body dementia (LBD) is the third most common dementia. It shows up differently — visual hallucinations, sleep behaviors, Parkinson-like stiffness — and is dangerous to treat with the wrong medications.
Updated 2026-02-20
Written and clinically reviewed by Ashlee Skabla Velez, APRN, ACNPC-AG
Dementia care and caregiver-support specialist
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Hallmark signs
- Fluctuating cognition — sharp one hour, confused the next.
- Vivid visual hallucinations — often of people, children, or animals.
- REM sleep behavior disorder — acting out dreams, sometimes years before diagnosis.
- Parkinson-like features — shuffling gait, stiffness, falls.
- Sensitivity to antipsychotics — especially Haldol — can cause severe rigidity.
Frequently asked questions
- Is LBD inherited?
- Mostly sporadic. Family history slightly increases risk but it's not Mendelian.
- What about medications that help?
- Rivastigmine (Exelon) often works dramatically well for LBD cognition. Pimavanserin can help hallucinations. AVOID typical antipsychotics.
Every dementia journey is different.
Memory Lane Care helps you understand what applies to your loved one, what to expect next, and which resources fit your family's situation.
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Related across the journey
Memory Lane connects every part of dementia care. Here's how this topic threads into the rest.
Behavior Guidance
Paying for Care
Resources
Keep reading
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Dementia describes the symptoms. Alzheimer's is one specific disease that causes them — the most common one, but not the only one.
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Hallucinations and false beliefs in dementia
Hallucinations are real to the person experiencing them. Arguing rarely works. Knowing when they're harmless versus a medical emergency does.
Treatments
Rivastigmine (Exelon)
Rivastigmine works similarly to donepezil but delivered through a daily skin patch. Many families prefer the patch when swallowing pills becomes harder.
Learning
Dementia medications
No medication cures dementia. Several slow decline modestly, two slow disease progression in early Alzheimer's, and many treat behavioral symptoms. Setting expectations matters.
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Am I eligible for Medicare GUIDE?
GUIDE (Guiding an Improved Dementia Experience) is a Medicare program launched in 2024 that gives families a care navigator, 24/7 helpline, caregiver training, and up to $2,500/year in respite — all at no copay.
Behavior Guidance
Agitation — what's underneath, and what calms it
Agitation in dementia is usually a signal of unmet need — pain, hunger, full bladder, fear — that the person can't put into words. The path through is detective work, not arguing.
Behavior Guidance
When dementia turns night into day
The brain's internal clock breaks down in dementia. Most caregivers eventually face a stretch of nights with someone wandering, asking questions, or simply awake.