Usually begins with abnormal electrical activity low in the cerebral cortex that spreads upward affecting both cerebral hemispheres and downward, affecting the reticular activating system

• A. Generalized Tonic-Clonic (Grand-Mal) Seizure
• B. Simple Partial Seizure
• C. Secondary Seizures
• D. Epilepsy

Answer: (A)

Generalized seizures involve rapid, widespread brain involvement with activity spreading from a focal start to both hemispheres and into brainstem systems like the reticular activating system, which disrupts consciousness. The description fits this pattern: abnormal electrical activity begins in the lower cortical areas and then propagates upward to both cerebral hemispheres while also affecting the reticular activating system. That combination produces a generalized tonic-clonic seizure, with loss of consciousness and bilateral convulsions. Simple partial seizures stay localized and usually don’t impair awareness, so they don’t produce this widespread pattern. Epilepsy is a condition of recurrent seizures, not a specific seizure type, and secondary generalized seizures refer to focal onset that secondarily becomes generalized. The emphasis on rapid bilateral spread and RAS involvement makes generalized tonic-clonic seizure the best match.