Focal-onset seizure Migrating focal seizure 2020-03-16T10:27:50Z A migrating focal seizure is a seizure that involves different body parts, usually without overlap, in a consecutive manner so that the offset of a seizure in one part coincides with its onset in another, even shifting multiple times between the sides of the body. They can be associated with autonomic manifestations. Migrating focal seizures are one of the pathognomonic features of Epilepsy of infancy with Migrating Focal Seizures (also known as Migrating Partial Seizures of Infancy, MPSI), which is an epileptic encephalopathy characterized by normal early development, refractory focal seizures arising independently from both hemispheres, and severe psychomotor retardation. EEG correlate shows migrating ictal foci, shifting areas of ictal onset between hemispheres. Migrating partial seizure