EEG with periodic lateralized epileptiform discharges Periodic lateralized epileptiform discharges (PLEDs)are periodic, lateralized, and epileptiform. PLEDs show a relatively constant interval between discharges (0.5 to 3 seconds). peter HP:0010853 http://www.case.edu/EpSO.owl#PeriodicLateralizedEpileptiformDischarge electroencephalogram with periodic lateralized epileptiform discharge Periodic Lateralized Epileptiform Discharge human_phenotype The epileptiform morphology of the discharges is not invariable, as PLEDS are often closer to slow waves than to sharp waves in morphology. PLEDs are often are caused by acute destructive focal lesions. PLEDs are often a transitory phenomenon, disappearing in a matter of weeks, even if the causal lesion persists, and often transforming into a less specific but more persistent focal slow appearance. EEG: periodic lateralized epileptiform discharges UMLS:C4021215 2010-07-11T08:25:02Z Focal epileptiform discharges with limited propagation to contralateral hemisphere