Prevalence of spontaneous lingual‐facial‐buccal dyskinesias in the elderly

The prevalence of spontaneous lingual-facial-buccal movements was determined in 661 patients between the ages of 50 and 79 without neuroleptic exposure or known CNS disease. The prevalence was 0.8% between ages 50 and 59, 6% between ages 60 and 69, and 7.8% between ages 70 and 79.