What is a focal motor seizure?

See below:: A simple partial seizure with localized motor activity. There may be spasm or clonus (jerking) of one muscle or a muscle group and this may remain localized or it may subsequently spread to adjacent muscles as a jacksonian seizure. Those w/simple focal seizures do not lose consciousness. They will be aware of and remember the events that occur at the time. Complex partial seizures may not.

Focal motor seizure: A focal motor seizure may be shaking or a muscle twitch in the face or the arm caused by involuntary electrical activity in the brain. With this seizure, there is no loss of consciousness. Another name for this is a simple partial seizure. It must occur on one side only.

See below:: A simple partial seizure with localized motor activity. There may be spasm or clonus (jerking) of one muscle or a muscle group and this may remain localized or it may subsequently spread to adjacent muscles as a jacksonian seizure.

Localized jerking: A seizure which causes movement of face, arm or leg, associated with a restricted abnormal electrical discharge in the brain. Sometimes, if prolonged, it may spread and become a generalized seizure.