Question

Spontaneous parkinsonian features that are not due to antidopaminergic medications or stroke are common in LBD, eventually occurring in over 85%. Many LBD patients may only experience one parkinsonian feature falls short of this, so documentation of only one of these cardinal features is required. Because the diagnosis of LBD and PD overlap with dementia, the LBD criteria include a 1‐year rule between the onset of dementia and parkinsonism in order to distinguish them for LBD diagnosis.

a) True
b) False

Answer 1

The diagnosis of LBD includes a 1-year rule between the onset of dementia and parkinsonism to distinguish it from PD.

Step-by-step explanation:

The statement is true.

The diagnosis of Lewy Body Dementia (LBD) includes a 1-year rule between the onset of dementia and parkinsonism. This rule is used to distinguish LBD from Parkinson's Disease (PD) that overlaps with dementia. LBD is characterized by the presence of spontaneous parkinsonian features, like falls, tremors, rigidity, and postural instability, in over 85% of patients. The diagnosis of LBD requires the documentation of at least one of these cardinal features.