Introduction: Huntington’s disease (HD) is a neurodegenerative, autosomal dominant disabling condition due to an expansion of the CAG trinucleotide in the HTT gene. Motor, psychiatric, and cognitive disorders characterize it. Chilean reports on HD in the era of molecular diagnosis were wanted. Methods: This is a retrospective analysis of a prospective cohort of patients with HD seen at the Center for Movement Disorders (CETRAM) in Chile between 2013 and 2019. Sociodemographic, genotype, and neuropsychiatric features were investigated. Results: One hundred-three proband with HD were identified ..read more

Introduction: Essential tremor (ET) is the most common tremor disorder, estimated to affect 7 million individuals in the U.S. There is little empirical evidence on comorbidities among this population beyond higher prevalence of brain-related and stress-related disorders. This study aims to examine differences in the prevalence of the 31 Elixhauser comorbidities among ET patients compared to statistically similar control patients. Methods: An extract from Optum’s de-identified Clinformatics® Data Mart Database (CDM) from 2018-2019 of adults aged 40 to 80 years with at least one claim with an ET ..read more

Introduction: Coronavirus disease 2019 (COVID-19), a global pandemic, has infected approximately 10% of the world's population. This comprehensive review aims to determine the prevalence of various neurological disorders in COVID-19 without overlapping meta-analysis errors. Methods: We searched for meta-analyses on neurologic disorders following COVID-19 published up to March 14, 2023. We obtained 1,184 studies, of which 44 meta-analyses involving 9,228,588 COVID-19 patients were finally included. After confirming the forest plot of each study and removing overlapping individual studies, a re ..read more

BACKGROUND: Sporadic Creutzfeldt-Jakob disease (s-CJD) is a rare, fatal neurodegenerative disorder. Familial cases of Creutzfeldt-Jakob disease (f-CJD) due to mutations in the PRNP gene are even rarer around the world; however, in Israel there is a focus of f-CJD patients carrying the E200K mutation. As the number of CJD E200K carriers in Israel is high and increasing, transmission of CJD to normal people was suspected. If such transmission occurs, the incidence of s-CJD would be expected to increase as well, resulting in changes of the ratio of familial/sporadic cases. METHODS: Using data fro ..read more

Introduction: Depression and aphasia impair the quality of life after a stroke. Studies linking depression risk to post-stroke aphasia (PSA) lacked confirmation using a large database. Methods: Using Taiwan's National Health Insurance claims data, we identified ≥18 years old patients hospitalized for stroke from 2005 to 2009, and those diagnosed with aphasia during hospitalization or within three months after discharge were selected to form the aphasic group. We estimated depression incidence by December 31, 2018, and used the Cox proportional hazards model to estimate aphasia group to non-aph ..read more

Background: Myasthenia gravis (MG) is a rare chronic autoimmune disease caused by autoantibodies directed against postsynaptic antigens of the neuromuscular junction. Over the last decades, increasing incidence and prevalence rates have been reported. Epidemiological data on prevalence and incidence in Germany are lacking. Furthermore, the MG treatment landscape is rapidly changing due to the continued approval of novel monoclonal antibodies. Method: This is a retrospective study assessing incidence, prevalence, and hospitalization rates of MG as well as treatment patterns in Germany over 10 y ..read more

Background: The ongoing aging population in high-income countries is responsible for a dramatic rise in the number of elderly stroke patients in whom many questions remain regarding the use of acute revascularization therapy. This review aimed to compare stroke patients from population-based studies to those included in RCTs in terms of age. Summary: Population-based incidence studies conducted in high income that complied with the defined quality criteria were reviewed (period 1985-2020). RCTs of acute ischemic stroke therapy including intravenous thrombolysis (IVT) with either alteplase or t ..read more

Neuroepidemiology 2022;56:471–476 ..read more

Neuroepidemiology 2022;56:469–471 ..read more

Introduction: Few studies account for prehospital deaths when estimating incidence and mortality rates of moderate and severe traumatic brain injury (msTBI). In a population-based study, covering both urban and rural areas, including also prehospital deaths, the aim was to estimate incidence and mortality rates of msTBI. Further, we studied the 30-day and 6-month case-fatality proportion of severe TBI in relation to age. Methods: All patients aged ≥17 years who sustained a msTBI in Central Norway were identified by three sources: 1) the regional trauma center, 2) the general hospitals, and 3 ..read more