Epilepsia partialis continua is a rare type of recurrent motor epileptic seizures that are focal (hands and face), and recur every few seconds or minutes for extended periods (days or years). During these seizures, there is repetitive focal myoclonus or Jacksonian march . After a seizure has subsided, Todd's phenomenon may be observed, which includes transient unilateral weakness.

These seizures are usually due to large, acute brain lesions resulting from strokes in adults and focal cortical inflammatory processes in children (Rasmussen's encephalitis ), possibly caused by chronic viral infections or autoimmune processes. They are very therapy-resistant, and the primary therapeutic goal is to stop secondary generalization.