Focal-onset seizure Focal motor seizure 2011-10-18T02:33:17Z Focal motor seizures Localized motor seizure Segmental motor seizure Localised motor seizure A motor onset seizure involves motor activity (movement) and may be due to either an increase or decrease in contraction in a muscle or group of muscles. Depending on the muscle groups involved and the way they are affected, the movement features of a motor onset seizure may be simple or more complex. SNOMEDCT_US:128612007 Localised motor seizures Partial motor seizures UMLS:C0016399 HP:0011153 SNOMEDCT_US:82401000 A type of focal-onset seizure characterized by a motor sign as its initial semiological manifestation. Partial motor seizure Localized motor seizures Motor seizure