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Perioral myoclonia with absences (EEG)

The illustrated typical myoclonic absence occurred during hyperventilation with breath-counting. Note the similarities of the 3 Hz spike-and-wave ictal discharge with that of childhood absence epilepsy despite significant clinical differences documented with video EEG. (Used with permission from: Panayiotopoulos CP. A Clinical Guide to Epileptic Syndromes and Their Treatment. Revised 2nd ed. London: Springer, 2010.)