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September 1979

Paroxysmal Dyskinesia-Reply

Author Affiliations

Center for Health Sciences University of Wisconsin, Madison 1300 University Ave Madison, WI 53706

Arch Neurol. 1979;36(9):596-597. doi:10.1001/archneur.1979.00500450090024

In Reply.—  We want to thank Dr Dasheiff for his interest in our report. However, we find that his arguments are either of a very personal nature or not relevant to the topic. We reemphasize that every generalized motor attack accompanied by unaltered scalp EEG activity should not be considered epileptic in nature. Obvious statements on electroclinical correlation of partial (simplex, compound, or complex) seizures are not relevant to our discussion.Dr Dasheiff states that postanoxic myoclonus is a disorder similar to paroxysmal dyskinesias. Although this may be a fascinating hypothesis, we are not convinced and would like to see supporting data before considering it plausible. More than ten years ago, Gastaut1 emphasized that not all myoclonic activities are epileptic manifestations. On the basis of pharmacological, clinical, and electropolygraphic data, action or intention myocloni, such as those occurring in dentatorubro degeneration and the Lance-Adam syndrome, should not be considered epileptic at

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