Dementia is a frequent problem encountered in advanced stages of Parkinson disease (PD).
In recent years, research has focused on the pre-dementia stages of cognitive impairment in …

The clinical features of dementia with Lewy bodies (DLB) and Parkinson's disease dementia
(PDD) are similar and include dementia, cognitive fluctuations, and (visual) hallucinations in …

The recent formalization of clinical criteria for Parkinson's disease with dementia (PDD)
codifies many studies on this topic, including those assessing biological correlates. These …

LRRK2 variants are implicated in both familial and sporadic PD. LRRK2‐PD has a generally
benign clinical presentation and variable pathology, with inconsistent presence of Lewy …

Objective: Estimates of the penetrance of LRRK2 G2019S vary widely (24%–100%),
reflective of differences in ascertainment, age, sex, ethnic group, and genetic and …

Containing 50 chapters by some of the most prominent clinical neuropsychologists, the
Textbook of Clinical Neuropsychology sets a new standard in the field in its scope, breadth …

Psychotic symptoms are common in Parkinson's disease (PD) and are associated with
poorer quality of life and increased caregiver burden. PD psychosis is correlated with …

In 2004 it was first shown that mutations in LRRK2 can cause Parkinson's disease. This
initial discovery was quickly followed by the observation that a single particular mutation is a …

Background Parkinson's disease (PD) associated with LRRK2 mutations has been
described as similar to idiopathic PD with minor clinical differences. No study has compared …

Objectives: Using a family study design, we describe the motor and nonmotor phenotype in
probands with LRRK2 G2019S mutations and family members and compare these …