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
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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Memory Lane connects every part of dementia care. Here's how this topic threads into the rest.
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