Generalized seizures involve the entire brain and commonly present with which feature?

• A. Absence seizure (petit mal)
• B. Tonic-clonic jerking of both arms/legs
• C. Simple partial seizures
• D. Complex partial seizures

Answer: (B)

Generalized seizures affect both hemispheres from the start, so the presentation typically includes loss of consciousness and movement that involves the entire body. The most common depiction is tonic-clonic activity: the whole body experiences stiffening (tonic phase) followed by rhythmic jerking (clonic phase) of both arms and legs. Absence seizures are generalized too but present mainly as brief episodes of impaired awareness with minimal or no convulsive movement. Simple partial seizures are focal with preserved consciousness, and complex partial seizures are focal with impaired consciousness and sometimes automatisms. So the feature described—bilateral jerking of the arms and legs—fits the classic generalized tonic-clonic pattern.