Symptoms of dementia with Lewy bodies or Parkinson’s disease with dementia (both considered Lewy Body dementias) may be similar to those of Alzheimer’s disease or other dementias. The main symptom of Lewy Body dementias is progressive dementia and problems with “executive functions” such as planning, paying attention and deciding on an appropriate action.
People with Lewy body dementias may also have one or more of the following symptoms:
- Vivid hallucinations
- Noticeable fluctuation in attention and alertness
- Parkinsonism [physical symptoms such as stiffness, tremors and problems with coordination]
- REM [rapid eye movement] sleep behavior disorder, in which people physically act out dreams
- Extreme sensitivity to antipsychotic medications used to treat hallucinations.
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