Parkinsonism & related disorders · 2015
Internal tremor in Parkinson's disease, multiple sclerosis, and essential tremor.
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Cochrane Graham D, Rizvi Syed, Abrantes Ana, Crabtree Brigid, Cahill Jonathan, Friedman Joseph H
Аннотация
OBJECTIVE: Internal tremor (IT) is a poorly recognized symptom that has been described in Parkinson's disease (PD). Described as a feeling of tremor in the extremities or trunk without actual movement, ITs are not debilitating but can be bothersome to patients. The origin of the sensation is unknown., and ITs may be prevalent in other diseases than PD. The present study sought to expand knowledge about IT by confirming their presence in PD, and determining their prevalence in Multiple Sclerosis (MS), and Essential Tremor (ET).
METHODS: A survey was developed in order to determine the prevalence of IT in PD, MS, and ET and to learn what associations with various disease characteristics were present. The survey was administered to 89 consecutive PD, 70 MS, and 11 ET patients.
RESULTS: ITs were found to be a prevalent symptom in all three disorders (32.6% of PD, 35.9% of MS, and 54.5% of ET subjects reported experiencing ITs). ITs were found to be associated both with the subjects' perceived levels of anxiety and the presence of visible tremors.
CONCLUSION: ITs appear to be a common symptom in all three disorders studied. These results need to be confirmed and compared to appropriate control populations.
METHODS: A survey was developed in order to determine the prevalence of IT in PD, MS, and ET and to learn what associations with various disease characteristics were present. The survey was administered to 89 consecutive PD, 70 MS, and 11 ET patients.
RESULTS: ITs were found to be a prevalent symptom in all three disorders (32.6% of PD, 35.9% of MS, and 54.5% of ET subjects reported experiencing ITs). ITs were found to be associated both with the subjects' perceived levels of anxiety and the presence of visible tremors.
CONCLUSION: ITs appear to be a common symptom in all three disorders studied. These results need to be confirmed and compared to appropriate control populations.