Generalized seizures are characterized by which pattern?

• A. Only in one limb
• B. Limited to the face
• C. Seen throughout body
• D. Triggered by flashing lights

Answer: (C)

Generalized seizures involve widespread brain activity from the onset, so the abnormal discharge affects both sides of the brain and manifests throughout the body. That bilateral involvement gives rise to generalized motor symptoms, such as convulsions that involve multiple limbs and often a loss of consciousness (and, in some types, brief absence spells with momentary behavioral arrest). This is different from seizures that start in one specific area of the brain and then spread, which typically produce symptoms limited to a particular limb or a part of the face. Flashing lights can trigger seizures in some people with photosensitive epilepsy, but that trigger does not define generalized seizures—the defining pattern is the body-wide, symmetric involvement. EEG often shows bilateral, synchronous discharges, reflecting the diffuse brain activity.