The relation of essential tremor to Parkinson's disease.
To test the alleged genetic linkage between essential tremor and Parkinson's disease, the relatives of patients with essential tremor were examined to see whether Parkinson's disease occurred more frequently than expected. There was no increase of Parkinson's disease in the essential tremor families. It is concluded that essential tremor and Parkinson's disease are genetically independent diseases.
D000328:Adult; D000368:Aged; D008040:Genetic Linkage; D006801:Humans; D008875:Middle Aged; D010300:Parkinson Disease / Q000235:genetics*; D012306:Risk; D014202:Tremor / Q000235:genetics*