Understanding Seizure Types
Focal Seizures
Focal seizures start in networks within one side of the brain. Their effects depend on the networks involved and whether the seizure spreads.
“Partial seizure” is an older name.
About this information
ESCO reviews this information regularly. It supports learning and does not replace professional medical advice, diagnosis or treatment. Discuss your own care with your healthcare provider.
Different networks. Different experiences.
A seizure may cause a movement, sensation, emotional change or change in consciousness. Some effects are visible; others are felt only by the person.
Preserved consciousness
The person remains aware and responsive, although they may experience unusual sensations or movements.
Impaired consciousness
Awareness or responsiveness is affected. The person may appear awake but have difficulty responding or remembering the event.
Can a focal seizure change?
Yes. Consciousness can become impaired, or activity can spread to both sides and develop into a focal-to-bilateral tonic-clonic seizure.
Ask your healthcare provider to explain your seizure classification and response plan.