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StudiuParkinsonÎncredere bună20.06.2026

Yawning-related tremor in patients with Parkinson's disease: prevalence and clinical associations

This cross-sectional study of 119 Parkinson's disease patients found yawning-triggered tremor (YRT) significantly more prevalent in PD (18.5%) than controls (2.7%), with notably higher rates in patients with concurrent essential tremor (41.2%) or REM sleep behavior disorder (68.2%). In approximately one-third of cases, YRT preceded motor symptom onset by ~21 months, suggesting it may serve as an early neurodegeneration marker reflecting shared brainstem pathophysiology.

StudiuParkinsonÎncredere înaltă20.06.2026

Upper-thoracic vertebral fractures and non-vertebral fracture burden in Parkinson's disease: a matched case-control study

This matched case-control study of 116 Parkinson's disease patients with osteoporotic vertebral fractures and 349 matched controls found that PD is associated with a 2.35-fold higher risk of total fractures and nearly threefold higher upper-thoracic vertebral fractures (T1-T10). Non-vertebral fractures were also significantly more common in PD patients, particularly at the hip, distal radius/ulna, and ribs, suggesting increased fall risk and skeletal fragility beyond bone mineral density reduction.

StudiuParkinsonÎncredere înaltă20.06.2026

Drug-Induced Parkinsonism: Clinical Perspective and Management Approach

Drug-induced parkinsonism (DIP) is a common adverse effect of dopamine receptor-blocking agents that mimics idiopathic Parkinson's disease but requires prior exposure to triggering medications for diagnosis. Management involves discontinuing or reducing the offending agent, considering alternative medications with lower DIP risk, and using L-dopa when necessary, with ancillary testing like DaT scans helping distinguish DIP from prodromal Parkinson's disease.

StudiuParkinsonÎncredere înaltă20.06.2026

Prodromal Peripheral Immune Cell Profile in Drug-Induced Parkinsonism Relative to Parkinson's Disease

This study compared immune cell profiles in individuals with drug-induced Parkinsonism (DIP) and idiopathic Parkinson's disease (PD) using UK Biobank data, finding that both conditions showed elevated neutrophil counts and immune inflammation markers approximately 9 years before diagnosis. However, immune alterations in DIP were attributable to psychiatric comorbidities, while reduced lymphocyte counts appeared to be a distinctive prodromal biomarker specific to PD.

StudiuParkinsonÎncredere înaltă20.06.2026

Fecal Tyrosine Decarboxylase and Motor Response Complications in Parkinson's Disease

This study examined whether gut bacterial tyrosine decarboxylase (TDC), which metabolizes levodopa, is associated with motor complications in 178 Parkinson's disease patients. While patients with dyskinesia and motor fluctuations showed 2-3 fold higher fecal TDC levels, differences were not statistically significant, suggesting a potential but unproven relationship between microbiota-derived enzymes and treatment response variability.