Focal (Partial) Seizures: These seizures originate in a specific area of the brain and can be further categorized into simple focal seizures (where awareness is preserved) and complex focal seizures (where awareness is altered).
Generalized Seizures: These seizures involve both hemispheres of the brain from the start. They include tonic-clonic seizures (formerly known as grand mal seizures), absence seizures (formerly known as petit mal seizures), myoclonic seizures, and atonic seizures.