What is the definition or description of: focal motor seizure?

FOCAL LESIONS CAN: Result is specific epileptic discharges that start at site of lesion and spread. A focal seizure by definition does not generalize and thus, may not lose awareness. There may be rhythmical shaking of a hand, moving up the arm, and perhaps involving face and/or leg, and stopping after 1-2 minutes. Can be termed "jacksonian march". Classically associated with focal tumors, but not always.

Motor strip frontal: The brain has specific regions that control specific parts of the body. The motor strip of the frontal lobe has foot and leg at top and hand and face down the side. Very useful areas (mouth and hand) have huge area while less useful have less. Involved neurons can seize and produce abnormal twitching just in the specific part of the body they represent. This causes a focal motor seizure.