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Myoclonic Seizures
Myoclonic seizures are generalized seizures characterized by single, intense muscular contractions that may result in a powerful jerk of the limbs, trunk, or face. They are thought to result from abnormal activity in an area of the brain responsible for muscle tone and posture. When myoclonic seizures cause the contraction of large muscle groups, such as the flexor or extensor muscles of the trunk, an individual may be thrown forward or backward powerfully, often causing injury.