Objective: Age at onset of diagnostic motor manifestations in Huntington disease (HD) is
strongly correlated with an expanded CAG trinucleotide repeat. The length of the normal CAG …

Peak-dose dyskinesias are abnormal movements that usually occur 1 h after oral
administration of levodopa, and often complicate chronic treatment of Parkinson's disease. We …

The presence and potential etiologies of peripheral neuropathy (PN) in patients with Parkinson's
Disease (PD) is unknown. We examined for presence of PN in patients with PD. From a …

Objective: To assess effects of caffeine on Parkinson disease (PD). Methods: In this multicenter
parallel-group controlled trial, patients with PD with 1–8 years disease duration, Hoehn & …

Spinocerebellar ataxia type 2 (SCA2) has been recognized recently as an uncommon cause
of parkinsonism, an alternate presentation to the typical cerebellar disorder. This research …

The discovery of the Huntington's disease (HD) gene has provided the impetus to determine
the association between the triplet repeat sequences and clinical manifestations of the …

Patients with Parkinson's disease (PD) are known to experience autonomic nervous system
dysfunction; this disruptive symptomatology includes urinary urgency, frequency, and …

Objective To evaluate the associations of mild behavioral impairment (MBI) with cognitive
deficits and patterns of gray matter changes in Parkinson disease (PD). Methods Sixty patients …

Pathological gambling (PG) has been identified in patients with Parkinson’s disease (PD)
treated with dopamine agonists suggesting that dysregulation of brain dopaminergic activity …

Dopa‐responsive dystonia (DRD) is a lifelong disorder in which dopamine deficiency is not
associated with neuronal loss and therefore it is an ideal human model for investigating the …