Contribution of fatigue experienced by Parkinson's Disease patients on caregiver burden.

Background: Fatigue is a common non-motor symptom (NMS) in Parkinson's disease (PD), affecting up to 50% of patients. It is suggested that PD-related fatigue may contribute to the burden perceived by caregivers.

Objective: This study aims to evaluate the impact of PD-related fatigue on caregiver burden.

Parkinson's disease and vitamins: a focus on vitamin B12.

Parkinson's disease (PD) has been linked to a vast array of vitamins among which vitamin B12 (Vit B12) is the most relevant and often investigated specially in the context of intrajejunal levodopa infusion therapy. Vit B12 deficiency, itself, has been reported to cause acute parkinsonism. Nevertheless, concrete mechanisms through which B12 deficiency interacts with PD in terms of pathophysiology, clinical manifestation and progression remains unclear.