[Essential tremor: a follow-up study].
[Essential tremor: a follow-up study].
A plain-language reading has not been prepared for this paper yet.
Original abstract
41 patients who had been diagnosed as having essential tremor at least two years previously have been controlled. In 39 cases this diagnosis was confirmed. One patient was completely symptom-free after bilateral thalamotomy and another patient was now considered to have Parkinson's disease which had been discussed already four years before. 61% of the patients gave a positive family history for essential tremor, only two had non-first degree relatives suffering from Parkinson's disease. The present study does not provide any evidence for a correlation between essential tremor and Parkinson's disease. However, it should be noted that discrete other "extrapyramidal" signs may occasionally be found in patients having essential tremor.