Background and PurposeCognitive impairments are common in Parkinson's disease (PD), although the severity of these impairments does not significantly impair the patient's daily activities. The aim of this study was to determine the frequency of mild cognitive impairment (MCI) of Parkinson's disease (PDMCI) and its subtypes in nondemented PD patients. We also evaluated the influence of age on the pattern of subtypes of PDMCI.MethodsA total of 141 consecutive, nondemented PD patients underwent a comprehensive neuropsychological assessment covering the five cognitive domains: attention, language, visuospatial, memory, and executive functions. PDMCI was defined as impaired performance in at least one of these five cognitive domains. The influence of age on the distribution of subtypes of PDMCI was assessed by comparing patients in two groups dichotomized according to their age at assessment (younger vs. older).ResultsFifty-seven (40.4%) of the nondemented PD patients had an impairment in at least one domain, and were therefore considered as having PDMCI. The age at assessment and age at disease onset were significantly higher in the PDMCI patients. The amnestic type of PDMCI was the most frequent, followed by the visuospatial, linguistic, executive, and attention types in that order. The frequency of PDMCI was higher for all subtypes in the older group; the domain that was influenced the most by age was executive function.ConclusionsMCI was common in PD and the subtypes were diverse. Age was found to be an important risk factor for the development of PDMCI, particularly for the executive subtype. These results indicate that the concept of MCI should be introduced in PD.

BackgroundGerstmann-Sträussler-Scheinker disease (GSS) is a type of human transmissible spongiform encephalopathy (TSE) that is determined genetically.Case ReportA 46-year-old woman presented with a slowly progressive ataxic gait and cognitive decline. She was alert but did not cooperate well due to severe dementia and dysarthria. High signal intensities in the cerebral cortices were evident in MRI, especially in diffusion-weighted images (DWI). A prion protein gene (PRNP) analysis revealed a P102L (proline-to-leucine) mutation in codon 102.ConclusionsThis is the first reported case of GSS (confirmed by PRNP analysis) in Korea. Distinctive MRI findings are also presented.

Propofol, a GABA-mediated inhibitor of excitatory neurotransmitter, is a popular intravenous agent for general anesthesia and sedation. Its side effects reportedly include opisthotonus, seizures, and myoclonus, and are usually manageable. We present a patient who developed propofol-induced delayed-onset refractory myoclonic seizures that resisted antiepileptic drugs.

Sargassum horneri (SH), which has been distributed along the coast of China has flowed and invaded into Korea, causing great damage from 2015. For the sustainable strategy to control of...

Our study showed that children with CIDP have some distinguishing features from adults in terms of clinical course and response to treatment.